1210101102100 has 72 divisors (see below), whose sum is σ = 2864815140096. Its totient is φ = 440009760000.

The previous prime is 1210101102097. The next prime is 1210101102101. The reversal of 1210101102100 is 12011010121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210101102101) 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, 30209085 + ... + 30249115.

It is an arithmetic number, because the mean of its divisors is an integer number (39789099168).

Almost surely, 2^{1210101102100} is an apocalyptic number.

1210101102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210101102100 is an abundant number, since it is smaller than the sum of its proper divisors (1654714037996).

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

1210101102100 is a wasteful number, since it uses less digits than its factorization.

1210101102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67537 (or 67530 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1210101102100 its reverse (12011010121), we get a palindrome (1222112112221).

The spelling of 1210101102100 in words is "one trillion, two hundred ten billion, one hundred one million, one hundred two thousand, one hundred".