1022102421 has 16 divisors (see below), whose sum is σ = 1387739136. Its totient is φ = 669035376.

The previous prime is 1022102401. The next prime is 1022102429. The reversal of 1022102421 is 1242012201.

It is not a de Polignac number, because 1022102421 - 2¹⁸ = 1021840277 is a prime.

It is a super-2 number, since 2×1022102421² = 2089386718028122482, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022102421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022102429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27996 + ... + 53178.

It is an arithmetic number, because the mean of its divisors is an integer number (86733696).

Almost surely, 2^1022102421 is an apocalyptic number.

It is an amenable number.

1022102421 is a deficient number, since it is larger than the sum of its proper divisors (365636715).

1022102421 is a wasteful number, since it uses less digits than its factorization.

1022102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25432.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1022102421 is about 31970.3365793981. The cubic root of 1022102421 is about 1007.3138508407.

Adding to 1022102421 its reverse (1242012201), we get a palindrome (2264114622).

The spelling of 1022102421 in words is "one billion, twenty-two million, one hundred two thousand, four hundred twenty-one".