121001212222000 has 160 divisors (see below), whose sum is σ = 337954445584704. Its totient is φ = 41412179456000.

The previous prime is 121001212221971. The next prime is 121001212222003. The reversal of 121001212222000 is 222212100121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (121001212222003) 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, 161392327 + ... + 162140326.

Almost surely, 2^{121001212222000} is an apocalyptic number.

121001212222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001212222000 is an abundant number, since it is smaller than the sum of its proper divisors (216953233362704).

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

121001212222000 is a wasteful number, since it uses less digits than its factorization.

121001212222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323532704 (or 323532688 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121001212222000 its reverse (222212100121), we get a palindrome (121223424322121).

The spelling of 121001212222000 in words is "one hundred twenty-one trillion, one billion, two hundred twelve million, two hundred twenty-two thousand".