121012012011100 has 72 divisors (see below), whose sum is σ = 300111951605760. Its totient is φ = 41489533821120.

The previous prime is 121012012011089. The next prime is 121012012011109. The reversal of 121012012011100 is 1110210210121.

It is a happy number.

It is a super-2 number, since 2×121012012011100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012012011109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110873841 + ... + 111959959.

It is an arithmetic number, because the mean of its divisors is an integer number (4168221550080).

Almost surely, 2^{121012012011100} is an apocalyptic number.

121012012011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012012011100 is an abundant number, since it is smaller than the sum of its proper divisors (179099939594660).

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

121012012011100 is a wasteful number, since it uses less digits than its factorization.

121012012011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245307 (or 1245300 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121012012011100 its reverse (1110210210121), we get a palindrome (122122222221221).

The spelling of 121012012011100 in words is "one hundred twenty-one trillion, twelve billion, twelve million, eleven thousand, one hundred".