121025214012 has 96 divisors (see below), whose sum is σ = 308820278592. Its totient is φ = 36741758976.

The previous prime is 121025213999. The next prime is 121025214017. The reversal of 121025214012 is 210412520121.

It is a super-2 number, since 2×121025214012² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121025214012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121025214017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712608 + ... + 865944.

It is an arithmetic number, because the mean of its divisors is an integer number (3216877902).

Almost surely, 2^121025214012 is an apocalyptic number.

121025214012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121025214012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154410139296).

121025214012 is an abundant number, since it is smaller than the sum of its proper divisors (187795064580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121025214012 is a wasteful number, since it uses less digits than its factorization.

121025214012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153487 (or 153485 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 121025214012 its reverse (210412520121), we get a palindrome (331437734133).

The spelling of 121025214012 in words is "one hundred twenty-one billion, twenty-five million, two hundred fourteen thousand, twelve".