121310103312210 has 128 divisors (see below), whose sum is σ = 324636465703680. Its totient is φ = 28831449636864.

The previous prime is 121310103312197. The next prime is 121310103312221. The reversal of 121310103312210 is 12213301013121.

It is a super-2 number, since 2×121310103312210² (a number of 29 digits) contains 22 as substring.

It is a Curzon 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, 19532832 + ... + 24983028.

It is an arithmetic number, because the mean of its divisors is an integer number (2536222388310).

Almost surely, 2^{121310103312210} is an apocalyptic number.

121310103312210 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 121310103312210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162318232851840).

121310103312210 is an abundant number, since it is smaller than the sum of its proper divisors (203326362391470).

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

121310103312210 is a wasteful number, since it uses less digits than its factorization.

121310103312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452540.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 121310103312210 its reverse (12213301013121), we get a palindrome (133523404325331).

The spelling of 121310103312210 in words is "one hundred twenty-one trillion, three hundred ten billion, one hundred three million, three hundred twelve thousand, two hundred ten".