121012011121000 has 64 divisors (see below), whose sum is σ = 287810206266960. Its totient is φ = 47611283040000.

The previous prime is 121012011120989. The next prime is 121012011121013. The reversal of 121012011121000 is 121110210121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5715570807076 + 115296440313924 = 2390726^2 + 10737618^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 991840731 + ... + 991962730.

Almost surely, 2^{121012011121000} is an apocalyptic number.

121012011121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012011121000 is an abundant number, since it is smaller than the sum of its proper divisors (166798195145960).

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

121012011121000 is a wasteful number, since it uses less digits than its factorization.

121012011121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983803543 (or 1983803529 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121012011121000 its reverse (121110210121), we get a palindrome (121133121331121).

The spelling of 121012011121000 in words is "one hundred twenty-one trillion, twelve billion, eleven million, one hundred twenty-one thousand".