1221011121202 has 8 divisors (see below), whose sum is σ = 1831655862576. Its totient is φ = 610459167012.

The previous prime is 1221011121193. The next prime is 1221011121223. The reversal of 1221011121202 is 2021211101221.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23163888 + ... + 23216539.

It is an arithmetic number, because the mean of its divisors is an integer number (228956982822).

Almost surely, 2^{1221011121202} is an apocalyptic number.

1221011121202 is a deficient number, since it is larger than the sum of its proper divisors (610644741374).

1221011121202 is a wasteful number, since it uses less digits than its factorization.

1221011121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46393592.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1221011121202 its reverse (2021211101221), we get a palindrome (3242222222423).

The spelling of 1221011121202 in words is "one trillion, two hundred twenty-one billion, eleven million, one hundred twenty-one thousand, two hundred two".