1201012202100 has 72 divisors (see below), whose sum is σ = 3587023138048. Its totient is φ = 309938630400.

The previous prime is 1201012202057. The next prime is 1201012202107. The reversal of 1201012202100 is 12022101021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201012202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64561249 + ... + 64579848.

Almost surely, 2^{1201012202100} is an apocalyptic number.

1201012202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201012202100 is an abundant number, since it is smaller than the sum of its proper divisors (2386010935948).

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

1201012202100 is a wasteful number, since it uses less digits than its factorization.

1201012202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129141145 (or 129141138 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201012202100 its reverse (12022101021), we get a palindrome (1213034303121).

The spelling of 1201012202100 in words is "one trillion, two hundred one billion, twelve million, two hundred two thousand, one hundred".