121100211320 has 64 divisors (see below), whose sum is σ = 298802442240. Its totient is φ = 43805852800.

The previous prime is 121100211307. The next prime is 121100211329. The reversal of 121100211320 is 23112001121.

It is a super-2 number, since 2×121100211320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121100211295 and 121100211304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100211329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636452 + ... + 804531.

It is an arithmetic number, because the mean of its divisors is an integer number (4668788160).

Almost surely, 2^121100211320 is an apocalyptic number.

121100211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100211320 is an abundant number, since it is smaller than the sum of its proper divisors (177702230920).

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

121100211320 is a wasteful number, since it uses less digits than its factorization.

121100211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441196 (or 1441192 counting only the distinct ones).

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

Adding to 121100211320 its reverse (23112001121), we get a palindrome (144212212441).

The spelling of 121100211320 in words is "one hundred twenty-one billion, one hundred million, two hundred eleven thousand, three hundred twenty".