20562221622066 has 32 divisors (see below), whose sum is σ = 42913088824320. Its totient is φ = 6555974976144.

The previous prime is 20562221622053. The next prime is 20562221622101. The reversal of 20562221622066 is 66022612226502.

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, 8721645 + ... + 10825503.

It is an arithmetic number, because the mean of its divisors is an integer number (1341034025760).

Almost surely, 2^{20562221622066} is an apocalyptic number.

20562221622066 is an abundant number, since it is smaller than the sum of its proper divisors (22350867202254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20562221622066 is a wasteful number, since it uses less digits than its factorization.

20562221622066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174710.

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 20562221622066 its reverse (66022612226502), we get a palindrome (86584833848568).

The spelling of 20562221622066 in words is "twenty trillion, five hundred sixty-two billion, two hundred twenty-one million, six hundred twenty-two thousand, sixty-six".