1202012121100 has 72 divisors (see below), whose sum is σ = 2985420636128. Its totient is φ = 411505920000.

The previous prime is 1202012121061. The next prime is 1202012121109. The reversal of 1202012121100 is 11212102021.

It is not an unprimeable number, because it can be changed into a prime (1202012121109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 804651 + ... + 1746850.

Almost surely, 2^{1202012121100} is an apocalyptic number.

1202012121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202012121100 is an abundant number, since it is smaller than the sum of its proper divisors (1783408515028).

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

1202012121100 is a wasteful number, since it uses less digits than its factorization.

1202012121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552195 (or 2552188 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1202012121100 its reverse (11212102021), we get a palindrome (1213224223121).

The spelling of 1202012121100 in words is "one trillion, two hundred two billion, twelve million, one hundred twenty-one thousand, one hundred".