20001122111962 has 16 divisors (see below), whose sum is σ = 30013164511272. Its totient is φ = 9996734684160.

The previous prime is 20001122111879. The next prime is 20001122111963. The reversal of 20001122111962 is 26911122110002.

It can be written as a sum of positive squares in 4 ways, for example, as 19999597912281 + 1524199681 = 4472091^2 + 39041^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20001122111962.

It is not an unprimeable number, because it can be changed into a prime (20001122111963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55258012 + ... + 55618792.

Almost surely, 2^{20001122111962} is an apocalyptic number.

20001122111962 is a deficient number, since it is larger than the sum of its proper divisors (10012042399310).

20001122111962 is a wasteful number, since it uses less digits than its factorization.

20001122111962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371313.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 20001122111962 its reverse (26911122110002), we get a palindrome (46912244221964).

The spelling of 20001122111962 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, nine hundred sixty-two".