121021112111110 has 8 divisors (see below), whose sum is σ = 217838001800016. Its totient is φ = 48408444844440.

The previous prime is 121021112111041. The next prime is 121021112111111. The reversal of 121021112111110 is 11111211120121.

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

It is a super-2 number, since 2×121021112111110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021112111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6051055605546 + ... + 6051055605565.

It is an arithmetic number, because the mean of its divisors is an integer number (27229750225002).

Almost surely, 2^{121021112111110} is an apocalyptic number.

121021112111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021112111110 is a deficient number, since it is larger than the sum of its proper divisors (96816889688906).

121021112111110 is a wasteful number, since it uses less digits than its factorization.

121021112111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102111211118.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121021112111110 its reverse (11111211120121), we get a palindrome (132132323231231).

The spelling of 121021112111110 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred ten".