1021551001152 has 56 divisors (see below), whose sum is σ = 2948567668512. Its totient is φ = 309560908800.

The previous prime is 1021551001111. The next prime is 1021551001153. The reversal of 1021551001152 is 2511001551201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1021551001153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241842349 + ... + 241846572.

Almost surely, 2^{1021551001152} is an apocalyptic number.

1021551001152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021551001152 is an abundant number, since it is smaller than the sum of its proper divisors (1927016667360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021551001152 is a wasteful number, since it uses less digits than its factorization.

1021551001152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483688947 (or 483688937 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 1021551001152 its reverse (2511001551201), we get a palindrome (3532552552353).

The spelling of 1021551001152 in words is "one trillion, twenty-one billion, five hundred fifty-one million, one thousand, one hundred fifty-two".