1221031103002 has 8 divisors (see below), whose sum is σ = 1838673295956. Its totient is φ = 608140004352.

The previous prime is 1221031102927. The next prime is 1221031103003. The reversal of 1221031103002 is 2003011301221.

It can be written as a sum of positive squares in 2 ways, for example, as 1127565773161 + 93465329841 = 1061869^2 + 305721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1221031103003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187772933 + ... + 1187773960.

Almost surely, 2^{1221031103002} is an apocalyptic number.

1221031103002 is a deficient number, since it is larger than the sum of its proper divisors (617642192954).

1221031103002 is a wasteful number, since it uses less digits than its factorization.

1221031103002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375547152.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1221031103002 its reverse (2003011301221), we get a palindrome (3224042404223).

The spelling of 1221031103002 in words is "one trillion, two hundred twenty-one billion, thirty-one million, one hundred three thousand, two".