1221220010102 has 8 divisors (see below), whose sum is σ = 1832613190200. Its totient is φ = 610348946704.

The previous prime is 1221220010089. The next prime is 1221220010147. The reversal of 1221220010102 is 2010100221221.

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

It is a congruent number.

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, 130523327 + ... + 130532682.

It is an arithmetic number, because the mean of its divisors is an integer number (229076648775).

Almost surely, 2^{1221220010102} is an apocalyptic number.

1221220010102 is a deficient number, since it is larger than the sum of its proper divisors (611393180098).

1221220010102 is a wasteful number, since it uses less digits than its factorization.

1221220010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261058350.

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

Adding to 1221220010102 its reverse (2010100221221), we get a palindrome (3231320231323).

The spelling of 1221220010102 in words is "one trillion, two hundred twenty-one billion, two hundred twenty million, ten thousand, one hundred two".