20201222211123 has 32 divisors (see below), whose sum is σ = 27693606000640. Its totient is φ = 13088973617280.

The previous prime is 20201222211061. The next prime is 20201222211139. The reversal of 20201222211123 is 32111222210202.

It is not a de Polignac number, because 20201222211123 - 2³⁸ = 19926344304179 is a prime.

It is a super-2 number, since 2×20201222211123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201222211123.

It is not an unprimeable number, because it can be changed into a prime (20201222211143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498541458 + ... + 498581976.

It is an arithmetic number, because the mean of its divisors is an integer number (865425187520).

Almost surely, 2^{20201222211123} is an apocalyptic number.

20201222211123 is a deficient number, since it is larger than the sum of its proper divisors (7492383789517).

20201222211123 is a wasteful number, since it uses less digits than its factorization.

20201222211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45427.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20201222211123 its reverse (32111222210202), we get a palindrome (52312444421325).

The spelling of 20201222211123 in words is "twenty trillion, two hundred one billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-three".