121201011021012 has 24 divisors (see below), whose sum is σ = 304556386668576. Its totient is φ = 37292618775648.

The previous prime is 121201011020989. The next prime is 121201011021017. The reversal of 121201011021012 is 210120110102121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121201011020982 and 121201011021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201011021017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388464778758 + ... + 388464779069.

It is an arithmetic number, because the mean of its divisors is an integer number (12689849444524).

Almost surely, 2^{121201011021012} is an apocalyptic number.

121201011021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121201011021012 is an abundant number, since it is smaller than the sum of its proper divisors (183355375647564).

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

121201011021012 is a wasteful number, since it uses less digits than its factorization.

121201011021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776929557847 (or 776929557845 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121201011021012 its reverse (210120110102121), we get a palindrome (331321121123133).

The spelling of 121201011021012 in words is "one hundred twenty-one trillion, two hundred one billion, eleven million, twenty-one thousand, twelve".