211223010023130 has 64 divisors (see below), whose sum is σ = 579455530709760. Its totient is φ = 48271129403904.

The previous prime is 211223010023087. The next prime is 211223010023131. The reversal of 211223010023130 is 31320010322112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 211223010023097 and 211223010023106.

It is not an unprimeable number, because it can be changed into a prime (211223010023131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86456365 + ... + 88865904.

It is an arithmetic number, because the mean of its divisors is an integer number (9053992667340).

Almost surely, 2^{211223010023130} is an apocalyptic number.

211223010023130 is an abundant number, since it is smaller than the sum of its proper divisors (368232520686630).

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

211223010023130 is a wasteful number, since it uses less digits than its factorization.

211223010023130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175328023.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211223010023130 its reverse (31320010322112), we get a palindrome (242543020345242).

The spelling of 211223010023130 in words is "two hundred eleven trillion, two hundred twenty-three billion, ten million, twenty-three thousand, one hundred thirty".