121021121102 has 48 divisors (see below), whose sum is σ = 221189709312. Its totient is φ = 49422265200.

The previous prime is 121021121077. The next prime is 121021121119. The reversal of 121021121102 is 201121120121.

It is a super-3 number, since 3×121021121102³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 490727 + ... + 694877.

It is an arithmetic number, because the mean of its divisors is an integer number (4608118944).

Almost surely, 2^121021121102 is an apocalyptic number.

121021121102 is a deficient number, since it is larger than the sum of its proper divisors (100168588210).

121021121102 is a wasteful number, since it uses less digits than its factorization.

121021121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204453 (or 204446 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121021121102 its reverse (201121120121), we get a palindrome (322142241223).

The spelling of 121021121102 in words is "one hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, one hundred two".