20010022122211 has 4 divisors (see below), whose sum is σ = 21829115042424. Its totient is φ = 18190929202000.

The previous prime is 20010022122187. The next prime is 20010022122247. The reversal of 20010022122211 is 11222122001002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010022122211 - 2⁵ = 20010022122179 is a prime.

It is a super-2 number, since 2×20010022122211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010022122511) 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, 909546460090 + ... + 909546460111.

It is an arithmetic number, because the mean of its divisors is an integer number (5457278760606).

Almost surely, 2^{20010022122211} is an apocalyptic number.

20010022122211 is a deficient number, since it is larger than the sum of its proper divisors (1819092920213).

20010022122211 is a wasteful number, since it uses less digits than its factorization.

20010022122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819092920212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20010022122211 its reverse (11222122001002), we get a palindrome (31232144123213).

The spelling of 20010022122211 in words is "twenty trillion, ten billion, twenty-two million, one hundred twenty-two thousand, two hundred eleven".