1021153112425 has 12 divisors (see below), whose sum is σ = 1266285039376. Its totient is φ = 816886890000.

The previous prime is 1021153112359. The next prime is 1021153112429. The reversal of 1021153112425 is 5242113511201.

It is not a de Polignac number, because 1021153112425 - 2¹⁵ = 1021153079657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021153112393 and 1021153112402.

It is not an unprimeable number, because it can be changed into a prime (1021153112429) 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, 297099 + ... + 1459648.

Almost surely, 2^{1021153112425} is an apocalyptic number.

It is an amenable number.

1021153112425 is a deficient number, since it is larger than the sum of its proper divisors (245131926951).

1021153112425 is a wasteful number, since it uses less digits than its factorization.

1021153112425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780008 (or 1780003 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1021153112425 its reverse (5242113511201), we get a palindrome (6263266623626).

The spelling of 1021153112425 in words is "one trillion, twenty-one billion, one hundred fifty-three million, one hundred twelve thousand, four hundred twenty-five".