1000121211320 has 64 divisors (see below), whose sum is σ = 2805534835200. Its totient is φ = 311726090880.

The previous prime is 1000121211293. The next prime is 1000121211337. The reversal of 1000121211320 is 231121210001.

It is a super-2 number, since 2×1000121211320² (a number of 25 digits) contains 22 as substring.

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 = 1000121211295 and 1000121211304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162354260 + ... + 162360419.

It is an arithmetic number, because the mean of its divisors is an integer number (43836481800).

Almost surely, 2^{1000121211320} is an apocalyptic number.

1000121211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000121211320 is an abundant number, since it is smaller than the sum of its proper divisors (1805413623880).

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

1000121211320 is a wasteful number, since it uses less digits than its factorization.

1000121211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324714708 (or 324714704 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1000121211320 its reverse (231121210001), we get a palindrome (1231242421321).

The spelling of 1000121211320 in words is "one trillion, one hundred twenty-one million, two hundred eleven thousand, three hundred twenty".