20021220022022 has 16 divisors (see below), whose sum is σ = 31721542904832. Its totient is φ = 9462392057160.

The previous prime is 20021220021973. The next prime is 20021220022031. The reversal of 20021220022022 is 22022002212002.

It is a super-2 number, since 2×20021220022022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3754914818 + ... + 3754920149.

It is an arithmetic number, because the mean of its divisors is an integer number (1982596431552).

Almost surely, 2^{20021220022022} is an apocalyptic number.

20021220022022 is a deficient number, since it is larger than the sum of its proper divisors (11700322882810).

20021220022022 is a wasteful number, since it uses less digits than its factorization.

20021220022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7509835043.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20021220022022 its reverse (22022002212002), we get a palindrome (42043222234024).

The spelling of 20021220022022 in words is "twenty trillion, twenty-one billion, two hundred twenty million, twenty-two thousand, twenty-two".