101212200120 has 64 divisors (see below), whose sum is σ = 316838200320. Its totient is φ = 25816444544.

The previous prime is 101212200073. The next prime is 101212200181. The reversal of 101212200120 is 21002212101.

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

It is a junction number, because it is equal to n+sod(n) for n = 101212200096 and 101212200105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18332784 + ... + 18338303.

It is an arithmetic number, because the mean of its divisors is an integer number (4950596880).

Almost surely, 2^101212200120 is an apocalyptic number.

101212200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212200120 is an abundant number, since it is smaller than the sum of its proper divisors (215626000200).

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

101212200120 is a wasteful number, since it uses less digits than its factorization.

101212200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36671124 (or 36671120 counting only the distinct ones).

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

Adding to 101212200120 its reverse (21002212101), we get a palindrome (122214412221).

The spelling of 101212200120 in words is "one hundred one billion, two hundred twelve million, two hundred thousand, one hundred twenty".