221023342020124 has 48 divisors (see below), whose sum is σ = 442286869812480. Its totient is φ = 94672824744960.

The previous prime is 221023342020121. The next prime is 221023342020127. The reversal of 221023342020124 is 421020243320122.

It is an interprime number because it is at equal distance from previous prime (221023342020121) and next prime (221023342020127).

It is a super-2 number, since 2×221023342020124² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 221023342020092 and 221023342020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221023342020121) 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, 1876025179 + ... + 1876142989.

It is an arithmetic number, because the mean of its divisors is an integer number (9214309787760).

Almost surely, 2^{221023342020124} is an apocalyptic number.

It is an amenable number.

221023342020124 is an abundant number, since it is smaller than the sum of its proper divisors (221263527792356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221023342020124 is a wasteful number, since it uses less digits than its factorization.

221023342020124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153658 (or 153656 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221023342020124 its reverse (421020243320122), we get a palindrome (642043585340246).

The spelling of 221023342020124 in words is "two hundred twenty-one trillion, twenty-three billion, three hundred forty-two million, twenty thousand, one hundred twenty-four".