1213122122310 has 128 divisors (see below), whose sum is σ = 3338081961984. Its totient is φ = 276397608960.

The previous prime is 1213122122293. The next prime is 1213122122353. The reversal of 1213122122310 is 132212213121.

It is a super-2 number, since 2×1213122122310² (a number of 25 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148644630 + ... + 148652790.

It is an arithmetic number, because the mean of its divisors is an integer number (26078765328).

Almost surely, 2^{1213122122310} is an apocalyptic number.

1213122122310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213122122310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669040980992).

1213122122310 is an abundant number, since it is smaller than the sum of its proper divisors (2124959839674).

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

1213122122310 is a wasteful number, since it uses less digits than its factorization.

1213122122310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10358.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1213122122310 its reverse (132212213121), we get a palindrome (1345334335431).

The spelling of 1213122122310 in words is "one trillion, two hundred thirteen billion, one hundred twenty-two million, one hundred twenty-two thousand, three hundred ten".