123211001210 has 64 divisors (see below), whose sum is σ = 243852785280. Its totient is φ = 44451348480.

The previous prime is 123211001209. The next prime is 123211001267. The reversal of 123211001210 is 12100112321.

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, 8038514 + ... + 8053826.

It is an arithmetic number, because the mean of its divisors is an integer number (3810199770).

Almost surely, 2^123211001210 is an apocalyptic number.

123211001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123211001210 is a deficient number, since it is larger than the sum of its proper divisors (120641784070).

123211001210 is a wasteful number, since it uses less digits than its factorization.

123211001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15903.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 123211001210 its reverse (12100112321), we get a palindrome (135311113531).

Subtracting from 123211001210 its reverse (12100112321), we obtain a square (111110888889 = 333333²).

The spelling of 123211001210 in words is "one hundred twenty-three billion, two hundred eleven million, one thousand, two hundred ten".