1221121000202 has 8 divisors (see below), whose sum is σ = 1832549190912. Its totient is φ = 610271269900.

The previous prime is 1221121000199. The next prime is 1221121000237. The reversal of 1221121000202 is 2020001211221.

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

It is a super-2 number, since 2×1221121000202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144609824 + ... + 144618267.

It is an arithmetic number, because the mean of its divisors is an integer number (229068648864).

Almost surely, 2^{1221121000202} is an apocalyptic number.

1221121000202 is a deficient number, since it is larger than the sum of its proper divisors (611428190710).

1221121000202 is a wasteful number, since it uses less digits than its factorization.

1221121000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289230204.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221121000202 its reverse (2020001211221), we get a palindrome (3241122211423).

The spelling of 1221121000202 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred two", and thus it is an aban number.