121001001111210 has 128 divisors (see below), whose sum is σ = 325570963507200. Its totient is φ = 28522696907520.

The previous prime is 121001001111169. The next prime is 121001001111233. The reversal of 121001001111210 is 12111100100121.

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, 16141531 + ... + 22417649.

It is an arithmetic number, because the mean of its divisors is an integer number (2543523152400).

Almost surely, 2^{121001001111210} is an apocalyptic number.

121001001111210 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 121001001111210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162785481753600).

121001001111210 is an abundant number, since it is smaller than the sum of its proper divisors (204569962395990).

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

121001001111210 is a wasteful number, since it uses less digits than its factorization.

121001001111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277756.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121001001111210 its reverse (12111100100121), we get a palindrome (133112101211331).

The spelling of 121001001111210 in words is "one hundred twenty-one trillion, one billion, one million, one hundred eleven thousand, two hundred ten".