11020521355 has 8 divisors (see below), whose sum is σ = 13226308272. Its totient is φ = 8815295328.

The previous prime is 11020521307. The next prime is 11020521367. The reversal of 11020521355 is 55312502011.

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 11020521355 - 2⁹ = 11020520843 is a prime.

It is a super-2 number, since 2×11020521355² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 95709 + ... + 176638.

It is an arithmetic number, because the mean of its divisors is an integer number (1653288534).

Almost surely, 2^11020521355 is an apocalyptic number.

11020521355 is a deficient number, since it is larger than the sum of its proper divisors (2205786917).

11020521355 is an equidigital number, since it uses as much as digits as its factorization.

11020521355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280445.

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 11020521355 in words is "eleven billion, twenty million, five hundred twenty-one thousand, three hundred fifty-five".