2120221023100 has 18 divisors (see below), whose sum is σ = 4600879620344. Its totient is φ = 848088409200.

The previous prime is 2120221023073. The next prime is 2120221023103. The reversal of 2120221023100 is 13201220212.

It is a happy number.

It is a super-2 number, since 2×2120221023100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120221023103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10601105016 + ... + 10601105215.

Almost surely, 2^{2120221023100} is an apocalyptic number.

2120221023100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120221023100 is an abundant number, since it is smaller than the sum of its proper divisors (2480658597244).

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

2120221023100 is a wasteful number, since it uses less digits than its factorization.

2120221023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202210245 (or 21202210238 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2120221023100 its reverse (13201220212), we get a palindrome (2133422243312).

The spelling of 2120221023100 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, twenty-three thousand, one hundred".