1211040028832 has 12 divisors (see below), whose sum is σ = 2384235056826. Its totient is φ = 605520014400.

The previous prime is 1211040028829. The next prime is 1211040028931. The reversal of 1211040028832 is 2388200401121.

It can be written as a sum of positive squares in only one way, i.e., 723785771536 + 487254257296 = 850756^2 + 698036^2 .

It is a super-2 number, since 2×1211040028832² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 37845000901 = 1211040028832 / (1 + 2 + 1 + 1 + 0 + 4 + 0 + 0 + 2 + 8 + 8 + 3 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18922500419 + ... + 18922500482.

Almost surely, 2^{1211040028832} is an apocalyptic number.

It is an amenable number.

1211040028832 is a deficient number, since it is larger than the sum of its proper divisors (1173195027994).

1211040028832 is an equidigital number, since it uses as much as digits as its factorization.

1211040028832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37845000911 (or 37845000903 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

Adding to 1211040028832 its reverse (2388200401121), we get a palindrome (3599240429953).

The spelling of 1211040028832 in words is "one trillion, two hundred eleven billion, forty million, twenty-eight thousand, eight hundred thirty-two".