1012111002 has 96 divisors (see below), whose sum is σ = 2636375040. Its totient is φ = 274510080.

The previous prime is 1012110989. The next prime is 1012111039. The reversal of 1012111002 is 2001112101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204574 + ... + 209462.

It is an arithmetic number, because the mean of its divisors is an integer number (27462240).

Almost surely, 2^1012111002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012111002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318187520).

1012111002 is an abundant number, since it is smaller than the sum of its proper divisors (1624264038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012111002 is a wasteful number, since it uses less digits than its factorization.

1012111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988 (or 4985 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1012111002 is about 31813.6920523224. The cubic root of 1012111002 is about 1004.0208120689.

Adding to 1012111002 its reverse (2001112101), we get a palindrome (3013223103).

The spelling of 1012111002 in words is "one billion, twelve million, one hundred eleven thousand, two".