20021102 has 8 divisors (see below), whose sum is σ = 31000512. Its totient is φ = 9687600.

The previous prime is 20021093. The next prime is 20021137. The reversal of 20021102 is 20112002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20021102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161399 + ... + 161522.

It is an arithmetic number, because the mean of its divisors is an integer number (3875064).

Almost surely, 2^20021102 is an apocalyptic number.

20021102 is a deficient number, since it is larger than the sum of its proper divisors (10979410).

20021102 is a wasteful number, since it uses less digits than its factorization.

20021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322954.

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

The square root of 20021102 is about 4474.4946083329. The cubic root of 20021102 is about 271.5371941713.

Adding to 20021102 its reverse (20112002), we get a palindrome (40133104).

The spelling of 20021102 in words is "twenty million, twenty-one thousand, one hundred two".