21001101002022 has 16 divisors (see below), whose sum is σ = 43828384700160. Its totient is φ = 6696003217992.

The previous prime is 21001101001987. The next prime is 21001101002051. The reversal of 21001101002022 is 22020010110012.

It is a junction number, because it is equal to n+sod(n) for n = 21001101001989 and 21001101002007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76090945522 + ... + 76090945797.

It is an arithmetic number, because the mean of its divisors is an integer number (2739274043760).

Almost surely, 2^{21001101002022} is an apocalyptic number.

21001101002022 is an abundant number, since it is smaller than the sum of its proper divisors (22827283698138).

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

21001101002022 is a wasteful number, since it uses less digits than its factorization.

21001101002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152181891347.

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

Adding to 21001101002022 its reverse (22020010110012), we get a palindrome (43021111112034).

The spelling of 21001101002022 in words is "twenty-one trillion, one billion, one hundred one million, two thousand, twenty-two".