20202121222 has 32 divisors (see below), whose sum is σ = 32139014400. Its totient is φ = 9497318688.

The previous prime is 20202121217. The next prime is 20202121229. The reversal of 20202121222 is 22212120202.

It is a junction number, because it is equal to n+sod(n) for n = 20202121196 and 20202121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202121229) 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, 5430279 + ... + 5433997.

It is an arithmetic number, because the mean of its divisors is an integer number (1004344200).

Almost surely, 2^20202121222 is an apocalyptic number.

20202121222 is a deficient number, since it is larger than the sum of its proper divisors (11936893178).

20202121222 is a wasteful number, since it uses less digits than its factorization.

20202121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4780.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20202121222 its reverse (22212120202), we get a palindrome (42414241424).

The spelling of 20202121222 in words is "twenty billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-two".