1011420111 has 16 divisors (see below), whose sum is σ = 1452869600. Its totient is φ = 622166400.

The previous prime is 1011420097. The next prime is 1011420121. The reversal of 1011420111 is 1110241101.

It is not a de Polignac number, because 1011420111 - 2⁵ = 1011420079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011420121) 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, 174561 + ... + 180261.

It is an arithmetic number, because the mean of its divisors is an integer number (90804350).

Almost surely, 2^1011420111 is an apocalyptic number.

1011420111 is a deficient number, since it is larger than the sum of its proper divisors (441449489).

1011420111 is a wasteful number, since it uses less digits than its factorization.

1011420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1011420111 is about 31802.8318078752. The cubic root of 1011420111 is about 1003.7923039179.

Adding to 1011420111 its reverse (1110241101), we get a palindrome (2121661212).

It can be divided in two parts, 1011420 and 111, that multiplied together give a triangular number (112267620 = T₁₄₉₈₄).

The spelling of 1011420111 in words is "one billion, eleven million, four hundred twenty thousand, one hundred eleven".