21123331220101 has 8 divisors (see below), whose sum is σ = 23069613363264. Its totient is φ = 19181378961120.

The previous prime is 21123331220093. The next prime is 21123331220111. The reversal of 21123331220101 is 10102213332112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21123331220101 - 2³ = 21123331220093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123331220111) 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, 1082460840 + ... + 1082480353.

It is an arithmetic number, because the mean of its divisors is an integer number (2883701670408).

Almost surely, 2^{21123331220101} is an apocalyptic number.

It is an amenable number.

21123331220101 is a deficient number, since it is larger than the sum of its proper divisors (1946282143163).

21123331220101 is a wasteful number, since it uses less digits than its factorization.

21123331220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164942091.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21123331220101 its reverse (10102213332112), we get a palindrome (31225544552213).

The spelling of 21123331220101 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred thirty-one million, two hundred twenty thousand, one hundred one".