1022010111 has 12 divisors (see below), whose sum is σ = 1510568488. Its totient is φ = 665494704.

The previous prime is 1022010109. The next prime is 1022010113. The reversal of 1022010111 is 1110102201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1022010109) and next prime (1022010113).

It is not a de Polignac number, because 1022010111 - 2¹ = 1022010109 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022010093 and 1022010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022010113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320040 + ... + 1320813.

Almost surely, 2^1022010111 is an apocalyptic number.

1022010111 is a deficient number, since it is larger than the sum of its proper divisors (488558377).

1022010111 is a wasteful number, since it uses less digits than its factorization.

1022010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640902 (or 2640899 counting only the distinct ones).

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

The square root of 1022010111 is about 31968.8928647834. The cubic root of 1022010111 is about 1007.2835251320.

Adding to 1022010111 its reverse (1110102201), we get a palindrome (2132112312).

It can be divided in two parts, 1022010 and 111, that added together give a square (1022121 = 1011²).

The spelling of 1022010111 in words is "one billion, twenty-two million, ten thousand, one hundred eleven".