20021012102211 has 16 divisors (see below), whose sum is σ = 27134045789088. Its totient is φ = 13127688057600.

The previous prime is 20021012102191. The next prime is 20021012102327. The reversal of 20021012102211 is 11220121012002.

It is not a de Polignac number, because 20021012102211 - 2¹⁰ = 20021012101187 is a prime.

It is a super-2 number, since 2×20021012102211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021012102411) 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, 659506 + ... + 6362151.

It is an arithmetic number, because the mean of its divisors is an integer number (1695877861818).

Almost surely, 2^{20021012102211} is an apocalyptic number.

20021012102211 is a deficient number, since it is larger than the sum of its proper divisors (7113033686877).

20021012102211 is a wasteful number, since it uses less digits than its factorization.

20021012102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037302.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021012102211 its reverse (11220121012002), we get a palindrome (31241133114213).

The spelling of 20021012102211 in words is "twenty trillion, twenty-one billion, twelve million, one hundred two thousand, two hundred eleven".