121001200122000 has 320 divisors, whose sum is σ = 437074181676288. Its totient is φ = 28540823040000.

The previous prime is 121001200121911. The next prime is 121001200122059. The reversal of 121001200122000 is 221002100121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22333021 + ... + 27217020.

Almost surely, 2^{121001200122000} is an apocalyptic number.

121001200122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001200122000 is an abundant number, since it is smaller than the sum of its proper divisors (316072981554288).

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

121001200122000 is a wasteful number, since it uses less digits than its factorization.

121001200122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49550115 (or 49550099 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121001200122000 its reverse (221002100121), we get a palindrome (121222202222121).

The spelling of 121001200122000 in words is "one hundred twenty-one trillion, one billion, two hundred million, one hundred twenty-two thousand".