1022121535405 has 8 divisors (see below), whose sum is σ = 1228614220152. Its totient is φ = 816318309888.

The previous prime is 1022121535397. The next prime is 1022121535433. The reversal of 1022121535405 is 5045351212201.

It can be written as a sum of positive squares in 4 ways, for example, as 27270889321 + 994850646084 = 165139^2 + 997422^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022121535405 - 2³ = 1022121535397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172361544 + ... + 172367473.

It is an arithmetic number, because the mean of its divisors is an integer number (153576777519).

Almost surely, 2^{1022121535405} is an apocalyptic number.

It is an amenable number.

1022121535405 is a deficient number, since it is larger than the sum of its proper divisors (206492684747).

1022121535405 is an equidigital number, since it uses as much as digits as its factorization.

1022121535405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344729615.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1022121535405 its reverse (5045351212201), we get a palindrome (6067472747606).

The spelling of 1022121535405 in words is "one trillion, twenty-two billion, one hundred twenty-one million, five hundred thirty-five thousand, four hundred five".