1210322100138 has 32 divisors (see below), whose sum is σ = 2527828494336. Its totient is φ = 385603580208.

The previous prime is 1210322100109. The next prime is 1210322100139. The reversal of 1210322100138 is 8310012230121.

It is not an unprimeable number, because it can be changed into a prime (1210322100139) 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, 3185670 + ... + 3545297.

It is an arithmetic number, because the mean of its divisors is an integer number (78994640448).

Almost surely, 2^{1210322100138} is an apocalyptic number.

1210322100138 is an abundant number, since it is smaller than the sum of its proper divisors (1317506394198).

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

1210322100138 is a wasteful number, since it uses less digits than its factorization.

1210322100138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732298.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1210322100138 its reverse (8310012230121), we get a palindrome (9520334330259).

The spelling of 1210322100138 in words is "one trillion, two hundred ten billion, three hundred twenty-two million, one hundred thousand, one hundred thirty-eight".