23021112421 has 8 divisors (see below), whose sum is σ = 23120349120. Its totient is φ = 22922002272.

The previous prime is 23021112419. The next prime is 23021112437. The reversal of 23021112421 is 12421112032.

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 23021112421 - 2¹ = 23021112419 is a prime.

It is a super-3 number, since 3×23021112421³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021116421) 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, 342441 + ... + 404113.

It is an arithmetic number, because the mean of its divisors is an integer number (2890043640).

Almost surely, 2^23021112421 is an apocalyptic number.

It is an amenable number.

23021112421 is a deficient number, since it is larger than the sum of its proper divisors (99236699).

23021112421 is a wasteful number, since it uses less digits than its factorization.

23021112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63275.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 23021112421 its reverse (12421112032), we get a palindrome (35442224453).

The spelling of 23021112421 in words is "twenty-three billion, twenty-one million, one hundred twelve thousand, four hundred twenty-one".