122020201021221 has 24 divisors (see below), whose sum is σ = 176430456384000. Its totient is φ = 81264199828032.

The previous prime is 122020201021219. The next prime is 122020201021333. The reversal of 122020201021221 is 122120102020221.

It is a happy number.

122020201021221 is a `hidden beast` number, since 1 + 220 + 2 + 0 + 201 + 0 + 21 + 221 = 666.

It is not a de Polignac number, because 122020201021221 - 2¹ = 122020201021219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122020201021194 and 122020201021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020201025221) 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, 35107900 + ... + 38426618.

It is an arithmetic number, because the mean of its divisors is an integer number (7351269016000).

Almost surely, 2^{122020201021221} is an apocalyptic number.

It is an amenable number.

122020201021221 is a deficient number, since it is larger than the sum of its proper divisors (54410255362779).

122020201021221 is a wasteful number, since it uses less digits than its factorization.

122020201021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322873 (or 3322870 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122020201021221 its reverse (122120102020221), we get a palindrome (244140303041442).

The spelling of 122020201021221 in words is "one hundred twenty-two trillion, twenty billion, two hundred one million, twenty-one thousand, two hundred twenty-one".