22021000100123 has 8 divisors (see below), whose sum is σ = 22030104086400. Its totient is φ = 22011898004928.

The previous prime is 22021000100117. The next prime is 22021000100129. The reversal of 22021000100123 is 32100100012022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22021000100117) and next prime (22021000100129).

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 22021000100123 - 2⁴ = 22021000100107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021000100098 and 22021000100107.

It is not an unprimeable number, because it can be changed into a prime (22021000100129) 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, 23062838 + ... + 23998676.

It is an arithmetic number, because the mean of its divisors is an integer number (2753763010800).

Almost surely, 2^{22021000100123} is an apocalyptic number.

22021000100123 is a deficient number, since it is larger than the sum of its proper divisors (9103986277).

22021000100123 is an equidigital number, since it uses as much as digits as its factorization.

22021000100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945541.

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

Adding to 22021000100123 its reverse (32100100012022), we get a palindrome (54121100112145).

The spelling of 22021000100123 in words is "twenty-two trillion, twenty-one billion, one hundred thousand, one hundred twenty-three".