120021021211100 has 36 divisors (see below), whose sum is σ = 260446377505608. Its totient is φ = 48008268120000.

The previous prime is 120021021211093. The next prime is 120021021211109. The reversal of 120021021211100 is 1112120120021.

It is a super-2 number, since 2×120021021211100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021021211109) 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, 36843575 + ... + 39968625.

It is an arithmetic number, because the mean of its divisors is an integer number (7234621597378).

Almost surely, 2^{120021021211100} is an apocalyptic number.

120021021211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021021211100 is an abundant number, since it is smaller than the sum of its proper divisors (140425356294508).

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

120021021211100 is a wasteful number, since it uses less digits than its factorization.

120021021211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509126 (or 3509119 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120021021211100 its reverse (1112120120021), we get a palindrome (121133141331121).

The spelling of 120021021211100 in words is "one hundred twenty trillion, twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred".