1351221005653 has 16 divisors (see below), whose sum is σ = 1382212491264. Its totient is φ = 1320324325120.

The previous prime is 1351221005633. The next prime is 1351221005669. The reversal of 1351221005653 is 3565001221531.

It is a cyclic number.

It is not a de Polignac number, because 1351221005653 - 2²⁹ = 1350684134741 is a prime.

It is a super-2 number, since 2×1351221005653² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351221005633) 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, 122199501 + ... + 122210557.

It is an arithmetic number, because the mean of its divisors is an integer number (86388280704).

Almost surely, 2^{1351221005653} is an apocalyptic number.

It is an amenable number.

1351221005653 is a deficient number, since it is larger than the sum of its proper divisors (30991485611).

1351221005653 is a wasteful number, since it uses less digits than its factorization.

1351221005653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 1351221005653 in words is "one trillion, three hundred fifty-one billion, two hundred twenty-one million, five thousand, six hundred fifty-three".