121222120313000 has 128 divisors (see below), whose sum is σ = 327392315078400. Its totient is φ = 41150365920000.

The previous prime is 121222120312991. The next prime is 121222120313003. The reversal of 121222120313000 is 313021222121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (121222120313003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85022930 + ... + 86436929.

It is an arithmetic number, because the mean of its divisors is an integer number (2557752461550).

Almost surely, 2^{121222120313000} is an apocalyptic number.

121222120313000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222120313000 is an abundant number, since it is smaller than the sum of its proper divisors (206170194765400).

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

121222120313000 is a wasteful number, since it uses less digits than its factorization.

121222120313000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171459988 (or 171459974 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121222120313000 its reverse (313021222121), we get a palindrome (121535141535121).

The spelling of 121222120313000 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, three hundred thirteen thousand".