120001002121100 has 36 divisors (see below), whose sum is σ = 274107552217800. Its totient is φ = 45474063960960.

The previous prime is 120001002121057. The next prime is 120001002121103. The reversal of 120001002121100 is 1121200100021.

It is a super-4 number, since 4×120001002121100⁴ (a number of 57 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (120001002121103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31579209185 + ... + 31579212984.

Almost surely, 2^{120001002121100} is an apocalyptic number.

120001002121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001002121100 is an abundant number, since it is smaller than the sum of its proper divisors (154106550096700).

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

120001002121100 is a wasteful number, since it uses less digits than its factorization.

120001002121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63158422202 (or 63158422195 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120001002121100 its reverse (1121200100021), we get a palindrome (121122202221121).

The spelling of 120001002121100 in words is "one hundred twenty trillion, one billion, two million, one hundred twenty-one thousand, one hundred".