1221025341240 has 48 divisors (see below), whose sum is σ = 3968332360200. Its totient is φ = 325606757568.

The previous prime is 1221025341227. The next prime is 1221025341257. The reversal of 1221025341240 is 421435201221.

1221025341240 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 0 + 2 + 534 + 124 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1695868170 + ... + 1695868889.

Almost surely, 2^{1221025341240} is an apocalyptic number.

1221025341240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221025341240 is an abundant number, since it is smaller than the sum of its proper divisors (2747307018960).

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

1221025341240 is a wasteful number, since it uses less digits than its factorization.

1221025341240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391737076 (or 3391737069 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 1221025341240 in words is "one trillion, two hundred twenty-one billion, twenty-five million, three hundred forty-one thousand, two hundred forty".