1452111021200 has 90 divisors (see below), whose sum is σ = 4058279922546. Its totient is φ = 497866629120.

The previous prime is 1452111021191. The next prime is 1452111021259. The reversal of 1452111021200 is 21201112541.

It can be written as a sum of positive squares in 3 ways, for example, as 109404823696 + 1342706197504 = 330764^2 + 1158752^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37024049 + ... + 37063248.

Almost surely, 2^{1452111021200} is an apocalyptic number.

1452111021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1452111021200 is an abundant number, since it is smaller than the sum of its proper divisors (2606168901346).

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

1452111021200 is a wasteful number, since it uses less digits than its factorization.

1452111021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74087329 (or 74087311 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 1452111021200 its reverse (21201112541), we get a palindrome (1473312133741).

The spelling of 1452111021200 in words is "one trillion, four hundred fifty-two billion, one hundred eleven million, twenty-one thousand, two hundred".