121002211110 has 128 divisors (see below), whose sum is σ = 332292409344. Its totient is φ = 27933672960.

The previous prime is 121002211027. The next prime is 121002211171. The reversal of 121002211110 is 11112200121.

It is a super-4 number, since 4×121002211110⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 468444 + ... + 679296.

It is an arithmetic number, because the mean of its divisors is an integer number (2596034448).

Almost surely, 2^121002211110 is an apocalyptic number.

121002211110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121002211110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166146204672).

121002211110 is an abundant number, since it is smaller than the sum of its proper divisors (211290198234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121002211110 is a wasteful number, since it uses less digits than its factorization.

121002211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210958.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121002211110 its reverse (11112200121), we get a palindrome (132114411231).

The spelling of 121002211110 in words is "one hundred twenty-one billion, two million, two hundred eleven thousand, one hundred ten".