21022022111962 has 8 divisors (see below), whose sum is σ = 31533059606292. Its totient is φ = 10511002243200.

The previous prime is 21022022111899. The next prime is 21022022111963. The reversal of 21022022111962 is 26911122022012.

It can be written as a sum of positive squares in 2 ways, for example, as 18992591086401 + 2029431025561 = 4358049^2 + 1424581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21022022111963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850839 + ... + 6539722.

Almost surely, 2^{21022022111962} is an apocalyptic number.

21022022111962 is a deficient number, since it is larger than the sum of its proper divisors (10511037494330).

21022022111962 is a wasteful number, since it uses less digits than its factorization.

21022022111962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8812784.

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 21022022111962 its reverse (26911122022012), we get a palindrome (47933144133974).

The spelling of 21022022111962 in words is "twenty-one trillion, twenty-two billion, twenty-two million, one hundred eleven thousand, nine hundred sixty-two".