2021223001020 has 48 divisors (see below), whose sum is σ = 5660133793440. Its totient is φ = 538925239296.

The previous prime is 2021223001003. The next prime is 2021223001037. The reversal of 2021223001020 is 201003221202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021223001003) and next prime (2021223001037).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1627705 + ... + 2586864.

It is an arithmetic number, because the mean of its divisors is an integer number (117919454030).

Almost surely, 2^{2021223001020} is an apocalyptic number.

2021223001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021223001020 is an abundant number, since it is smaller than the sum of its proper divisors (3638910792420).

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

2021223001020 is a wasteful number, since it uses less digits than its factorization.

2021223001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222574 (or 4222572 counting only the distinct ones).

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

Adding to 2021223001020 its reverse (201003221202), we get a palindrome (2222226222222).

The spelling of 2021223001020 in words is "two trillion, twenty-one billion, two hundred twenty-three million, one thousand, twenty".