1202020021100 has 18 divisors (see below), whose sum is σ = 2608383446004. Its totient is φ = 480808008400.

The previous prime is 1202020021099. The next prime is 1202020021129. The reversal of 1202020021100 is 11200202021.

It is a happy number.

It is a super-2 number, since 2×1202020021100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6010100006 + ... + 6010100205.

Almost surely, 2^{1202020021100} is an apocalyptic number.

1202020021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202020021100 is an abundant number, since it is smaller than the sum of its proper divisors (1406363424904).

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

1202020021100 is a wasteful number, since it uses less digits than its factorization.

1202020021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12020200225 (or 12020200218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1202020021100 its reverse (11200202021), we get a palindrome (1213220223121).

The spelling of 1202020021100 in words is "one trillion, two hundred two billion, twenty million, twenty-one thousand, one hundred".