1021012135 has 64 divisors (see below), whose sum is σ = 1526636160. Its totient is φ = 645120000.

The previous prime is 1021012127. The next prime is 1021012141. The reversal of 1021012135 is 5312101201.

It is not a de Polignac number, because 1021012135 - 2³ = 1021012127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 849535 + ... + 850735.

It is an arithmetic number, because the mean of its divisors is an integer number (23853690).

Almost surely, 2^1021012135 is an apocalyptic number.

1021012135 is a deficient number, since it is larger than the sum of its proper divisors (505624025).

1021012135 is a wasteful number, since it uses less digits than its factorization.

1021012135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1021012135 is about 31953.2805045116. The cubic root of 1021012135 is about 1006.9555531117.

Adding to 1021012135 its reverse (5312101201), we get a palindrome (6333113336).

The spelling of 1021012135 in words is "one billion, twenty-one million, twelve thousand, one hundred thirty-five".