211421101023 has 32 divisors (see below), whose sum is σ = 345807463680. Its totient is φ = 126590202720.

The previous prime is 211421101019. The next prime is 211421101079. The reversal of 211421101023 is 320101124112.

211421101023 is a `hidden beast` number, since 211 + 421 + 1 + 0 + 10 + 23 = 666.

It is not a de Polignac number, because 211421101023 - 2² = 211421101019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211421100987 and 211421101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421101093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4263636 + ... + 4312937.

It is an arithmetic number, because the mean of its divisors is an integer number (10806483240).

Almost surely, 2^211421101023 is an apocalyptic number.

211421101023 is a deficient number, since it is larger than the sum of its proper divisors (134386362657).

211421101023 is a wasteful number, since it uses less digits than its factorization.

211421101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8576676 (or 8576670 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211421101023 its reverse (320101124112), we get a palindrome (531522225135).

The spelling of 211421101023 in words is "two hundred eleven billion, four hundred twenty-one million, one hundred one thousand, twenty-three".