220120001122021 has 32 divisors (see below), whose sum is σ = 295880443342848. Its totient is φ = 158148765109440.

The previous prime is 220120001122013. The next prime is 220120001122027. The reversal of 220120001122021 is 120221100021022.

It is a happy number.

It is not a de Polignac number, because 220120001122021 - 2³ = 220120001122013 is a prime.

It is a super-2 number, since 2×220120001122021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220120001121986 and 220120001122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120001122027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123634861 + ... + 125402626.

It is an arithmetic number, because the mean of its divisors is an integer number (9246263854464).

Almost surely, 2^{220120001122021} is an apocalyptic number.

It is an amenable number.

220120001122021 is a deficient number, since it is larger than the sum of its proper divisors (75760442220827).

220120001122021 is a wasteful number, since it uses less digits than its factorization.

220120001122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249038401.

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

Adding to 220120001122021 its reverse (120221100021022), we get a palindrome (340341101143043).

It can be divided in two parts, 220120001 and 122021, that added together give a palindrome (220242022).

The spelling of 220120001122021 in words is "two hundred twenty trillion, one hundred twenty billion, one million, one hundred twenty-two thousand, twenty-one".