121200122021012 has 24 divisors (see below), whose sum is σ = 212585046569280. Its totient is φ = 60461539482240.

The previous prime is 121200122021003. The next prime is 121200122021047. The reversal of 121200122021012 is 210120221002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343467587 + ... + 343820277.

It is an arithmetic number, because the mean of its divisors is an integer number (8857710273720).

Almost surely, 2^{121200122021012} is an apocalyptic number.

It is an amenable number.

121200122021012 is a deficient number, since it is larger than the sum of its proper divisors (91384924548268).

121200122021012 is a wasteful number, since it uses less digits than its factorization.

121200122021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548831 (or 548829 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121200122021012 its reverse (210120221002121), we get a palindrome (331320343023133).

The spelling of 121200122021012 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twenty-two million, twenty-one thousand, twelve".