2100223112420 has 36 divisors (see below), whose sum is σ = 4413061023420. Its totient is φ = 839595564864.

The previous prime is 2100223112417. The next prime is 2100223112437. The reversal of 2100223112420 is 242113220012.

It can be written as a sum of positive squares in 2 ways, for example, as 358398584896 + 1741824527524 = 598664^2 + 1319782^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2100223112392 and 2100223112401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308716739 + ... + 308723541.

Almost surely, 2^{2100223112420} is an apocalyptic number.

2100223112420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100223112420 is an abundant number, since it is smaller than the sum of its proper divisors (2312837911000).

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

2100223112420 is an frugal number, since it uses more digits than its factorization.

2100223112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15884 (or 9079 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2100223112420 its reverse (242113220012), we get a palindrome (2342336332432).

The spelling of 2100223112420 in words is "two trillion, one hundred billion, two hundred twenty-three million, one hundred twelve thousand, four hundred twenty".