121021021112 has 8 divisors (see below), whose sum is σ = 226914414600. Its totient is φ = 60510510552.

The previous prime is 121021021097. The next prime is 121021021141. The reversal of 121021021112 is 211120120121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×121021021112² (a number of 23 digits) 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, 7563813812 + ... + 7563813827.

It is an arithmetic number, because the mean of its divisors is an integer number (28364301825).

Almost surely, 2^121021021112 is an apocalyptic number.

It is an amenable number.

121021021112 is a deficient number, since it is larger than the sum of its proper divisors (105893393488).

121021021112 is a wasteful number, since it uses less digits than its factorization.

121021021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15127627645 (or 15127627641 counting only the distinct ones).

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

Adding to 121021021112 its reverse (211120120121), we get a palindrome (332141141233).

Subtracting 121021021112 from its reverse (211120120121), we obtain a palindrome (90099099009).

The spelling of 121021021112 in words is "one hundred twenty-one billion, twenty-one million, twenty-one thousand, one hundred twelve".