1221102000202 has 16 divisors (see below), whose sum is σ = 2093332000320. Its totient is φ = 523325857248.

The previous prime is 1221102000179. The next prime is 1221102000203. The reversal of 1221102000202 is 2020002011221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1221102000203) 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, 3484113 + ... + 3818539.

It is an arithmetic number, because the mean of its divisors is an integer number (130833250020).

Almost surely, 2^{1221102000202} is an apocalyptic number.

1221102000202 is a deficient number, since it is larger than the sum of its proper divisors (872230000118).

1221102000202 is a wasteful number, since it uses less digits than its factorization.

1221102000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595245.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1221102000202 its reverse (2020002011221), we get a palindrome (3241104011423).

The spelling of 1221102000202 in words is "one trillion, two hundred twenty-one billion, one hundred two million, two hundred two", and thus it is an aban number.