10121210011220 has 96 divisors (see below), whose sum is σ = 26500578693120. Its totient is φ = 3154494925440.

The previous prime is 10121210011207. The next prime is 10121210011223. The reversal of 10121210011220 is 2211001212101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 10121210011195 and 10121210011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121210011223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30510287 + ... + 30840233.

It is an arithmetic number, because the mean of its divisors is an integer number (276047694720).

Almost surely, 2^{10121210011220} is an apocalyptic number.

10121210011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121210011220 is an abundant number, since it is smaller than the sum of its proper divisors (16379368681900).

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

10121210011220 is a wasteful number, since it uses less digits than its factorization.

10121210011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349893 (or 349891 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10121210011220 its reverse (2211001212101), we get a palindrome (12332211223321).

The spelling of 10121210011220 in words is "ten trillion, one hundred twenty-one billion, two hundred ten million, eleven thousand, two hundred twenty".