220011122101021 has 16 divisors (see below), whose sum is σ = 231664030998400. Its totient is φ = 208365560137728.

The previous prime is 220011122100977. The next prime is 220011122101037. The reversal of 220011122101021 is 120101221110022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220011122101021 is a prime.

It is a super-2 number, since 2×220011122101021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220011122100986 and 220011122101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220011122102021) 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, 901529665 + ... + 901773673.

It is an arithmetic number, because the mean of its divisors is an integer number (14479001937400).

Almost surely, 2^{220011122101021} is an apocalyptic number.

It is an amenable number.

220011122101021 is a deficient number, since it is larger than the sum of its proper divisors (11652908897379).

220011122101021 is a wasteful number, since it uses less digits than its factorization.

220011122101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258868.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220011122101021 its reverse (120101221110022), we get a palindrome (340112343211043).

Subtracting from 220011122101021 its reverse (120101221110022), we obtain a palindrome (99909900990999).

The spelling of 220011122101021 in words is "two hundred twenty trillion, eleven billion, one hundred twenty-two million, one hundred one thousand, twenty-one".