1021153135124 has 24 divisors (see below), whose sum is σ = 1810881840768. Its totient is φ = 503794116000.

The previous prime is 1021153135091. The next prime is 1021153135153. The reversal of 1021153135124 is 4215313511201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4359752 + ... + 4587999.

It is an arithmetic number, because the mean of its divisors is an integer number (75453410032).

Almost surely, 2^{1021153135124} is an apocalyptic number.

It is an amenable number.

1021153135124 is a deficient number, since it is larger than the sum of its proper divisors (789728705644).

1021153135124 is a wasteful number, since it uses less digits than its factorization.

1021153135124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948135 (or 8948133 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 1021153135124 its reverse (4215313511201), we get a palindrome (5236466646325).

The spelling of 1021153135124 in words is "one trillion, twenty-one billion, one hundred fifty-three million, one hundred thirty-five thousand, one hundred twenty-four".