21101000120022 has 16 divisors (see below), whose sum is σ = 42202483373232. Its totient is φ = 7033586184480.

The previous prime is 21101000119987. The next prime is 21101000120023. The reversal of 21101000120022 is 22002100010112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101000120023) 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, 19561533 + ... + 20612024.

It is an arithmetic number, because the mean of its divisors is an integer number (2637655210827).

Almost surely, 2^{21101000120022} is an apocalyptic number.

21101000120022 is an abundant number, since it is smaller than the sum of its proper divisors (21101483253210).

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

21101000120022 is a wasteful number, since it uses less digits than its factorization.

21101000120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40261103.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21101000120022 its reverse (22002100010112), we get a palindrome (43103100130134).

The spelling of 21101000120022 in words is "twenty-one trillion, one hundred one billion, one hundred twenty thousand, twenty-two".