121021323221100 has 72 divisors (see below), whose sum is σ = 350273446720848. Its totient is φ = 32261438739200.

The previous prime is 121021323221089. The next prime is 121021323221111. The reversal of 121021323221100 is 1122323120121.

121021323221100 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121021323221089) and next prime (121021323221111).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67324671 + ... + 69098870.

It is an arithmetic number, because the mean of its divisors is an integer number (4864908982234).

Almost surely, 2^{121021323221100} is an apocalyptic number.

121021323221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021323221100 is an abundant number, since it is smaller than the sum of its proper divisors (229252123499748).

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

121021323221100 is a wasteful number, since it uses less digits than its factorization.

121021323221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136426515 (or 136426508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121021323221100 its reverse (1122323120121), we get a palindrome (122143646341221).

The spelling of 121021323221100 in words is "one hundred twenty-one trillion, twenty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred".