20213021222 has 32 divisors (see below), whose sum is σ = 31057266240. Its totient is φ = 9864279040.

The previous prime is 20213021203. The next prime is 20213021239. The reversal of 20213021222 is 22212031202.

It is a self number, because there is not a number n which added to its sum of digits gives 20213021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5288072 + ... + 5291892.

It is an arithmetic number, because the mean of its divisors is an integer number (970539570).

Almost surely, 2^20213021222 is an apocalyptic number.

20213021222 is a deficient number, since it is larger than the sum of its proper divisors (10844245018).

20213021222 is a wasteful number, since it uses less digits than its factorization.

20213021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20213021222 its reverse (22212031202), we get a palindrome (42425052424).

The spelling of 20213021222 in words is "twenty billion, two hundred thirteen million, twenty-one thousand, two hundred twenty-two".