1221025830414 has 32 divisors (see below), whose sum is σ = 2643251577120. Its totient is φ = 373793142912.

The previous prime is 1221025830379. The next prime is 1221025830443. The reversal of 1221025830414 is 4140385201221.

It is a super-2 number, since 2×1221025830414² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39716049 + ... + 39746780.

It is an arithmetic number, because the mean of its divisors is an integer number (82601611785).

Almost surely, 2^{1221025830414} is an apocalyptic number.

1221025830414 is an abundant number, since it is smaller than the sum of its proper divisors (1422225746706).

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

1221025830414 is a wasteful number, since it uses less digits than its factorization.

1221025830414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79463044.

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 1221025830414 in words is "one trillion, two hundred twenty-one billion, twenty-five million, eight hundred thirty thousand, four hundred fourteen".