20000122111211 has 16 divisors (see below), whose sum is σ = 22729290595200. Its totient is φ = 17437815489600.

The previous prime is 20000122111157. The next prime is 20000122111243. The reversal of 20000122111211 is 11211122100002.

It is not a de Polignac number, because 20000122111211 - 2²² = 20000117916907 is a prime.

It is a super-2 number, since 2×20000122111211² (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 (20000122111261) 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, 375788381 + ... + 375841598.

It is an arithmetic number, because the mean of its divisors is an integer number (1420580662200).

Almost surely, 2^{20000122111211} is an apocalyptic number.

20000122111211 is a deficient number, since it is larger than the sum of its proper divisors (2729168483989).

20000122111211 is a wasteful number, since it uses less digits than its factorization.

20000122111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751630090.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20000122111211 its reverse (11211122100002), we get a palindrome (31211244211213).

The spelling of 20000122111211 in words is "twenty trillion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".