1011143512 has 8 divisors (see below), whose sum is σ = 1895894100. Its totient is φ = 505571752.

The previous prime is 1011143453. The next prime is 1011143519. The reversal of 1011143512 is 2153411101.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1011143512² = 2044822403719388288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011143512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011143519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63196462 + ... + 63196477.

Almost surely, 2^1011143512 is an apocalyptic number.

It is an amenable number.

1011143512 is a deficient number, since it is larger than the sum of its proper divisors (884750588).

1011143512 is a wasteful number, since it uses less digits than its factorization.

1011143512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126392945 (or 126392941 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1011143512 is about 31798.4828568911. The cubic root of 1011143512 is about 1003.7007912490.

Adding to 1011143512 its reverse (2153411101), we get a palindrome (3164554613).

The spelling of 1011143512 in words is "one billion, eleven million, one hundred forty-three thousand, five hundred twelve".