21101002021223 has 2 divisors, whose sum is σ = 21101002021224. Its totient is φ = 21101002021222.

The previous prime is 21101002021139. The next prime is 21101002021249. The reversal of 21101002021223 is 32212020010112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101002021223 - 2³² = 21096707053927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101002021423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550501010611 + 10550501010612.

It is an arithmetic number, because the mean of its divisors is an integer number (10550501010612).

Almost surely, 2^{21101002021223} is an apocalyptic number.

21101002021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101002021223 is an equidigital number, since it uses as much as digits as its factorization.

21101002021223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21101002021223 its reverse (32212020010112), we get a palindrome (53313022031335).

The spelling of 21101002021223 in words is "twenty-one trillion, one hundred one billion, two million, twenty-one thousand, two hundred twenty-three".