121001622551400 has 96 divisors (see below), whose sum is σ = 375106746274560. Its totient is φ = 32266951703040.

The previous prime is 121001622551371. The next prime is 121001622551417. The reversal of 121001622551400 is 4155226100121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213024169 + ... + 213591431.

It is an arithmetic number, because the mean of its divisors is an integer number (3907361940360).

Almost surely, 2^{121001622551400} is an apocalyptic number.

121001622551400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001622551400 is an abundant number, since it is smaller than the sum of its proper divisors (254105123723160).

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

121001622551400 is a wasteful number, since it uses less digits than its factorization.

121001622551400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922795 (or 922786 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 121001622551400 its reverse (4155226100121), we get a palindrome (125156848651521).

The spelling of 121001622551400 in words is "one hundred twenty-one trillion, one billion, six hundred twenty-two million, five hundred fifty-one thousand, four hundred".