100124211220 has 36 divisors (see below), whose sum is σ = 231113164212. Its totient is φ = 36408803200.

The previous prime is 100124211217. The next prime is 100124211223. The reversal of 100124211220 is 22112421001.

It is an interprime number because it is at equal distance from previous prime (100124211217) and next prime (100124211223).

It can be written as a sum of positive squares in 2 ways, for example, as 75165898896 + 24958312324 = 274164^2 + 157982^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100124211194 and 100124211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100124211223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20684401 + ... + 20689240.

It is an arithmetic number, because the mean of its divisors is an integer number (6419810117).

Almost surely, 2^100124211220 is an apocalyptic number.

100124211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100124211220 is an abundant number, since it is smaller than the sum of its proper divisors (130988952992).

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

100124211220 is a wasteful number, since it uses less digits than its factorization.

100124211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41373672 (or 41373659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100124211220 its reverse (22112421001), we get a palindrome (122236632221).

The spelling of 100124211220 in words is "one hundred billion, one hundred twenty-four million, two hundred eleven thousand, two hundred twenty".