100023021001220 has 24 divisors (see below), whose sum is σ = 221103520108800. Its totient is φ = 37903460589792.

The previous prime is 100023021001207. The next prime is 100023021001243. The reversal of 100023021001220 is 22100120320001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100023021001195 and 100023021001204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131609237780 + ... + 131609238539.

It is an arithmetic number, because the mean of its divisors is an integer number (9212646671200).

Almost surely, 2^{100023021001220} is an apocalyptic number.

100023021001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100023021001220 is an abundant number, since it is smaller than the sum of its proper divisors (121080499107580).

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

100023021001220 is a wasteful number, since it uses less digits than its factorization.

100023021001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263218476347 (or 263218476345 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100023021001220 its reverse (22100120320001), we get a palindrome (122123141321221).

The spelling of 100023021001220 in words is "one hundred trillion, twenty-three billion, twenty-one million, one thousand, two hundred twenty".