121201012212 has 96 divisors (see below), whose sum is σ = 329105387520. Its totient is φ = 34001285760.

The previous prime is 121201012199. The next prime is 121201012223. The reversal of 121201012212 is 212210102121.

It is a super-2 number, since 2×121201012212² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121201012191 and 121201012200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1150663 + ... + 1251569.

It is an arithmetic number, because the mean of its divisors is an integer number (3428181120).

Almost surely, 2^121201012212 is an apocalyptic number.

121201012212 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 121201012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164552693760).

121201012212 is an abundant number, since it is smaller than the sum of its proper divisors (207904375308).

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

121201012212 is a wasteful number, since it uses less digits than its factorization.

121201012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101181 (or 101179 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201012212 its reverse (212210102121), we get a palindrome (333411114333).

The spelling of 121201012212 in words is "one hundred twenty-one billion, two hundred one million, twelve thousand, two hundred twelve".