1121000013278 has 32 divisors (see below), whose sum is σ = 1725475500000. Its totient is φ = 546039227520.

The previous prime is 1121000013277. The next prime is 1121000013347. The reversal of 1121000013278 is 8723100001211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000013277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6255773 + ... + 6432471.

It is an arithmetic number, because the mean of its divisors is an integer number (53921109375).

Almost surely, 2^{1121000013278} is an apocalyptic number.

1121000013278 is a deficient number, since it is larger than the sum of its proper divisors (604475486722).

1121000013278 is a wasteful number, since it uses less digits than its factorization.

1121000013278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177260.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 1121000013278 its reverse (8723100001211), we get a palindrome (9844100014489).

The spelling of 1121000013278 in words is "one trillion, one hundred twenty-one billion, thirteen thousand, two hundred seventy-eight".