121021102 has 4 divisors (see below), whose sum is σ = 181531656. Its totient is φ = 60510550.

The previous prime is 121021097. The next prime is 121021111. The reversal of 121021102 is 201120121.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×121021102² = 29292214258588808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255274 + ... + 30255277.

It is an arithmetic number, because the mean of its divisors is an integer number (45382914).

Almost surely, 2^121021102 is an apocalyptic number.

121021102 is a deficient number, since it is larger than the sum of its proper divisors (60510554).

121021102 is an equidigital number, since it uses as much as digits as its factorization.

121021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60510553.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 121021102 is about 11000.9591400023. The cubic root of 121021102 is about 494.6374953636.

Adding to 121021102 its reverse (201120121), we get a palindrome (322141223).

The spelling of 121021102 in words is "one hundred twenty-one million, twenty-one thousand, one hundred two".