21022032101 has 16 divisors (see below), whose sum is σ = 24167740800. Its totient is φ = 17912283840.

The previous prime is 21022032067. The next prime is 21022032107. The reversal of 21022032101 is 10123022012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21022032101 - 2¹⁰ = 21022031077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022032107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795635 + ... + 821631.

It is an arithmetic number, because the mean of its divisors is an integer number (1510483800).

Almost surely, 2^21022032101 is an apocalyptic number.

It is an amenable number.

21022032101 is a deficient number, since it is larger than the sum of its proper divisors (3145708699).

21022032101 is a wasteful number, since it uses less digits than its factorization.

21022032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26684.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21022032101 its reverse (10123022012), we get a palindrome (31145054113).

The spelling of 21022032101 in words is "twenty-one billion, twenty-two million, thirty-two thousand, one hundred one".