20021011212010 has 8 divisors (see below), whose sum is σ = 36037820181636. Its totient is φ = 8008404484800.

The previous prime is 20021011211989. The next prime is 20021011212031. The reversal of 20021011212010 is 1021211012002.

It is an interprime number because it is at equal distance from previous prime (20021011211989) and next prime (20021011212031).

It can be written as a sum of positive squares in 2 ways, for example, as 17109234141561 + 2911777070449 = 4136331^2 + 1706393^2 .

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

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, 1001050560591 + ... + 1001050560610.

Almost surely, 2^{20021011212010} is an apocalyptic number.

20021011212010 is a deficient number, since it is larger than the sum of its proper divisors (16016808969626).

20021011212010 is a wasteful number, since it uses less digits than its factorization.

20021011212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002101121208.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021011212010 its reverse (1021211012002), we get a palindrome (21042222224012).

The spelling of 20021011212010 in words is "twenty trillion, twenty-one billion, eleven million, two hundred twelve thousand, ten".