20123211030 has 64 divisors (see below), whose sum is σ = 54748189440. Its totient is φ = 4692698496.

The previous prime is 20123211029. The next prime is 20123211067. The reversal of 20123211030 is 3011232102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1350432 + ... + 1365251.

It is an arithmetic number, because the mean of its divisors is an integer number (855440460).

Almost surely, 2^20123211030 is an apocalyptic number.

20123211030 is an abundant number, since it is smaller than the sum of its proper divisors (34624978410).

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

20123211030 is a wasteful number, since it uses less digits than its factorization.

20123211030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715725.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20123211030 its reverse (3011232102), we get a palindrome (23134443132).

The spelling of 20123211030 in words is "twenty billion, one hundred twenty-three million, two hundred eleven thousand, thirty".