10121200001220 has 192 divisors, whose sum is σ = 36471937646592. Its totient is φ = 2035264320000.

The previous prime is 10121200001069. The next prime is 10121200001249. The reversal of 10121200001220 is 2210000212101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10121200001196 and 10121200001205.

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, 35191231 + ... + 35477670.

It is an arithmetic number, because the mean of its divisors is an integer number (189958008576).

Almost surely, 2^{10121200001220} is an apocalyptic number.

10121200001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121200001220 is an abundant number, since it is smaller than the sum of its proper divisors (26350737645372).

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

10121200001220 is a wasteful number, since it uses less digits than its factorization.

10121200001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70668962 (or 70668960 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10121200001220 its reverse (2210000212101), we get a palindrome (12331200213321).

The spelling of 10121200001220 in words is "ten trillion, one hundred twenty-one billion, two hundred million, one thousand, two hundred twenty".