10121001111220 has 24 divisors (see below), whose sum is σ = 21286952596224. Its totient is φ = 4042143251616.

The previous prime is 10121001111173. The next prime is 10121001111229. The reversal of 10121001111220 is 2211110012101.

It is a happy number.

10121001111220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10121001111220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121001111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391061292 + ... + 391087171.

It is an arithmetic number, because the mean of its divisors is an integer number (886956358176).

Almost surely, 2^{10121001111220} is an apocalyptic number.

10121001111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121001111220 is an abundant number, since it is smaller than the sum of its proper divisors (11165951485004).

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

10121001111220 is a wasteful number, since it uses less digits than its factorization.

10121001111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782149119 (or 782149117 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10121001111220 its reverse (2211110012101), we get a palindrome (12332111123321).

The spelling of 10121001111220 in words is "ten trillion, one hundred twenty-one billion, one million, one hundred eleven thousand, two hundred twenty".