20101022 has 8 divisors (see below), whose sum is σ = 30186216. Its totient is φ = 10038952.

The previous prime is 20101013. The next prime is 20101073. The reversal of 20101022 is 22010102.

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

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, 3413 + ... + 7200.

It is an arithmetic number, because the mean of its divisors is an integer number (3773277).

Almost surely, 2^20101022 is an apocalyptic number.

20101022 is a deficient number, since it is larger than the sum of its proper divisors (10085194).

20101022 is a wasteful number, since it uses less digits than its factorization.

20101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562.

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

The square root of 20101022 is about 4483.4163313259. The cubic root of 20101022 is about 271.8980208102.

Adding to 20101022 its reverse (22010102), we get a palindrome (42111124).

It can be divided in two parts, 2010102 and 2, that multiplied together give a palindrome (4020204).

The spelling of 20101022 in words is "twenty million, one hundred one thousand, twenty-two".