100012120202220 has 48 divisors (see below), whose sum is σ = 280034552464128. Its totient is φ = 26669840063680.

The previous prime is 100012120202213. The next prime is 100012120202227. The reversal of 100012120202220 is 22202021210001.

It is an interprime number because it is at equal distance from previous prime (100012120202213) and next prime (100012120202227).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100012120202220.

It is not an unprimeable number, because it can be changed into a prime (100012120202227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30342505 + ... + 33476735.

It is an arithmetic number, because the mean of its divisors is an integer number (5834053176336).

Almost surely, 2^{100012120202220} is an apocalyptic number.

100012120202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012120202220 is an abundant number, since it is smaller than the sum of its proper divisors (180022432261908).

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

100012120202220 is a wasteful number, since it uses less digits than its factorization.

100012120202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666070 (or 3666068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100012120202220 its reverse (22202021210001), we get a palindrome (122214141412221).

The spelling of 100012120202220 in words is "one hundred trillion, twelve billion, one hundred twenty million, two hundred two thousand, two hundred twenty".