1021001000022 has 48 divisors (see below), whose sum is σ = 2328684072000. Its totient is φ = 322409557872.

The previous prime is 1021001000017. The next prime is 1021001000027. The reversal of 1021001000022 is 2200001001201.

It is an interprime number because it is at equal distance from previous prime (1021001000017) and next prime (1021001000027).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1021000999968 and 1021001000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021001000027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17953629 + ... + 18010407.

It is an arithmetic number, because the mean of its divisors is an integer number (48514251500).

Almost surely, 2^{1021001000022} is an apocalyptic number.

1021001000022 is an abundant number, since it is smaller than the sum of its proper divisors (1307683071978).

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

1021001000022 is a wasteful number, since it uses less digits than its factorization.

1021001000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109385 (or 109382 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1021001000022 its reverse (2200001001201), we get a palindrome (3221002001223).

The spelling of 1021001000022 in words is "one trillion, twenty-one billion, one million, twenty-two", and thus it is an aban number and an uban number.