20501022 has 8 divisors (see below), whose sum is σ = 41002056. Its totient is φ = 6833672.

The previous prime is 20501021. The next prime is 20501023. The reversal of 20501022 is 22010502.

It is an interprime number because it is at equal distance from previous prime (20501021) and next prime (20501023).

It is a sphenic number, since it is the product of 3 distinct primes.

20501022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20500989 and 20501007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20501021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708413 + ... + 1708424.

It is an arithmetic number, because the mean of its divisors is an integer number (5125257).

Almost surely, 2^20501022 is an apocalyptic number.

20501022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20501022 is a wasteful number, since it uses less digits than its factorization.

20501022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416842.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20501022 is about 4527.8054286818. The cubic root of 20501022 is about 273.6897317336.

Adding to 20501022 its reverse (22010502), we get a palindrome (42511524).

The spelling of 20501022 in words is "twenty million, five hundred one thousand, twenty-two".