20012212101011 has 24 divisors (see below), whose sum is σ = 22209719360976. Its totient is φ = 18013199592960.

The previous prime is 20012212100981. The next prime is 20012212101019. The reversal of 20012212101011 is 11010121221002.

It is not a de Polignac number, because 20012212101011 - 2⁴² = 15614165589907 is a prime.

It is a super-2 number, since 2×20012212101011² (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 (20012212101019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13084916 + ... + 14534078.

It is an arithmetic number, because the mean of its divisors is an integer number (925404973374).

Almost surely, 2^{20012212101011} is an apocalyptic number.

20012212101011 is a deficient number, since it is larger than the sum of its proper divisors (2197507259965).

20012212101011 is a wasteful number, since it uses less digits than its factorization.

20012212101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451223 (or 1451210 counting only the distinct ones).

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

Adding to 20012212101011 its reverse (11010121221002), we get a palindrome (31022333322013).

The spelling of 20012212101011 in words is "twenty trillion, twelve billion, two hundred twelve million, one hundred one thousand, eleven".