1013211155 has 32 divisors (see below), whose sum is σ = 1347192000. Its totient is φ = 725401600.

The previous prime is 1013211131. The next prime is 1013211163. The reversal of 1013211155 is 5511123101.

It is a happy number.

It is not a de Polignac number, because 1013211155 - 2⁶ = 1013211091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2197625 + ... + 2198085.

It is an arithmetic number, because the mean of its divisors is an integer number (42099750).

Almost surely, 2^1013211155 is an apocalyptic number.

1013211155 is a deficient number, since it is larger than the sum of its proper divisors (333980845).

1013211155 is a wasteful number, since it uses less digits than its factorization.

1013211155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1013211155 is about 31830.9779146039. The cubic root of 1013211155 is about 1004.3844666902.

Adding to 1013211155 its reverse (5511123101), we get a palindrome (6524334256).

The spelling of 1013211155 in words is "one billion, thirteen million, two hundred eleven thousand, one hundred fifty-five".