2101223002020 has 96 divisors (see below), whose sum is σ = 6314844146688. Its totient is φ = 520141565952.

The previous prime is 2101223002019. The next prime is 2101223002057. The reversal of 2101223002020 is 202003221012.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14035284 + ... + 14184203.

It is an arithmetic number, because the mean of its divisors is an integer number (65779626528).

Almost surely, 2^{2101223002020} is an apocalyptic number.

2101223002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101223002020 is an abundant number, since it is smaller than the sum of its proper divisors (4213621144668).

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

2101223002020 is a wasteful number, since it uses less digits than its factorization.

2101223002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28219589 (or 28219587 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2101223002020 its reverse (202003221012), we get a palindrome (2303226223032).

The spelling of 2101223002020 in words is "two trillion, one hundred one billion, two hundred twenty-three million, two thousand, twenty".