101212130100 has 72 divisors (see below), whose sum is σ = 292880316960. Its totient is φ = 26986225280.

The previous prime is 101212130077. The next prime is 101212130143. The reversal of 101212130100 is 1031212101.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2733511 + ... + 2770289.

It is an arithmetic number, because the mean of its divisors is an integer number (4067782180).

Almost surely, 2^101212130100 is an apocalyptic number.

101212130100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212130100 is an abundant number, since it is smaller than the sum of its proper divisors (191668186860).

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

101212130100 is a wasteful number, since it uses less digits than its factorization.

101212130100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45969 (or 45962 counting only the distinct ones).

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

Adding to 101212130100 its reverse (1031212101), we get a palindrome (102243342201).

The spelling of 101212130100 in words is "one hundred one billion, two hundred twelve million, one hundred thirty thousand, one hundred".