121203354362156 has 12 divisors (see below), whose sum is σ = 231388221964200. Its totient is φ = 55092433800960.

The previous prime is 121203354362117. The next prime is 121203354362177. The reversal of 121203354362156 is 651263453302121.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 2754621690049 = 121203354362156 / (1 + 2 + 1 + 2 + 0 + 3 + 3 + 5 + 4 + 3 + 6 + 2 + 1 + 5 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377310844981 + ... + 1377310845068.

It is an arithmetic number, because the mean of its divisors is an integer number (19282351830350).

Almost surely, 2^{121203354362156} is an apocalyptic number.

It is an amenable number.

121203354362156 is a deficient number, since it is larger than the sum of its proper divisors (110184867602044).

121203354362156 is a wasteful number, since it uses less digits than its factorization.

121203354362156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754621690064 (or 2754621690062 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 121203354362156 in words is "one hundred twenty-one trillion, two hundred three billion, three hundred fifty-four million, three hundred sixty-two thousand, one hundred fifty-six".