1021112011 has 16 divisors (see below), whose sum is σ = 1086422400. Its totient is φ = 958003200.

The previous prime is 1021111951. The next prime is 1021112017. The reversal of 1021112011 is 1102111201.

It is a cyclic number.

It is not a de Polignac number, because 1021112011 - 2²⁵ = 987557579 is a prime.

It is a super-3 number, since 3×1021112011³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021112017) 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, 320635 + ... + 323803.

It is an arithmetic number, because the mean of its divisors is an integer number (67901400).

Almost surely, 2^1021112011 is an apocalyptic number.

1021112011 is a deficient number, since it is larger than the sum of its proper divisors (65310389).

1021112011 is a wasteful number, since it uses less digits than its factorization.

1021112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1021112011 is about 31954.8433105218. The cubic root of 1021112011 is about 1006.9883857001.

Adding to 1021112011 its reverse (1102111201), we get a palindrome (2123223212).

It can be divided in two parts, 10211 and 12011, that added together give a palindrome (22222).

The spelling of 1021112011 in words is "one billion, twenty-one million, one hundred twelve thousand, eleven".