20120220210111 has 16 divisors (see below), whose sum is σ = 31091205477888. Its totient is φ = 11335335328800.

The previous prime is 20120220210053. The next prime is 20120220210169. The reversal of 20120220210111 is 11101202202102.

It is an interprime number because it is at equal distance from previous prime (20120220210053) and next prime (20120220210169).

It is not a de Polignac number, because 20120220210111 - 2⁶ = 20120220210047 is a prime.

It is a super-2 number, since 2×20120220210111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120220210011) 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, 6747221920 + ... + 6747224901.

It is an arithmetic number, because the mean of its divisors is an integer number (1943200342368).

Almost surely, 2^{20120220210111} is an apocalyptic number.

20120220210111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20120220210111 is a deficient number, since it is larger than the sum of its proper divisors (10970985267777).

20120220210111 is a wasteful number, since it uses less digits than its factorization.

20120220210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13494446902.

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

Adding to 20120220210111 its reverse (11101202202102), we get a palindrome (31221422412213).

The spelling of 20120220210111 in words is "twenty trillion, one hundred twenty billion, two hundred twenty million, two hundred ten thousand, one hundred eleven".