122220201021 has 16 divisors (see below), whose sum is σ = 171878192640. Its totient is φ = 77038225200.

The previous prime is 122220201007. The next prime is 122220201031. The reversal of 122220201021 is 120102022221.

It is not a de Polignac number, because 122220201021 - 2⁵ = 122220200989 is a prime.

It is a super-2 number, since 2×122220201021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220201031) 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, 2102755 + ... + 2160096.

It is an arithmetic number, because the mean of its divisors is an integer number (10742387040).

Almost surely, 2^122220201021 is an apocalyptic number.

It is an amenable number.

122220201021 is a deficient number, since it is larger than the sum of its proper divisors (49657991619).

122220201021 is a wasteful number, since it uses less digits than its factorization.

122220201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263376.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122220201021 its reverse (120102022221), we get a palindrome (242322223242).

The spelling of 122220201021 in words is "one hundred twenty-two billion, two hundred twenty million, two hundred one thousand, twenty-one".