20102232123 has 24 divisors (see below), whose sum is σ = 30616494480. Its totient is φ = 12674672640.

The previous prime is 20102232121. The next prime is 20102232169. The reversal of 20102232123 is 32123220102.

It is not a de Polignac number, because 20102232123 - 2¹ = 20102232121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102232096 and 20102232105.

It is not an unprimeable number, because it can be changed into a prime (20102232121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2283 + ... + 200523.

It is an arithmetic number, because the mean of its divisors is an integer number (1275687270).

Almost surely, 2^20102232123 is an apocalyptic number.

20102232123 is a deficient number, since it is larger than the sum of its proper divisors (10514262357).

20102232123 is a wasteful number, since it uses less digits than its factorization.

20102232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198859 (or 198856 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20102232123 its reverse (32123220102), we get a palindrome (52225452225).

The spelling of 20102232123 in words is "twenty billion, one hundred two million, two hundred thirty-two thousand, one hundred twenty-three".