102001221121 has 8 divisors (see below), whose sum is σ = 102230092800. Its totient is φ = 101772524640.

The previous prime is 102001221079. The next prime is 102001221131. The reversal of 102001221121 is 121122100201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102001221121 - 2¹⁷ = 102001090049 is a prime.

It is a super-2 number, since 2×102001221121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102001221131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158700 + ... + 1243618.

It is an arithmetic number, because the mean of its divisors is an integer number (12778761600).

Almost surely, 2^102001221121 is an apocalyptic number.

It is an amenable number.

102001221121 is a deficient number, since it is larger than the sum of its proper divisors (228871679).

102001221121 is an equidigital number, since it uses as much as digits as its factorization.

102001221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87599.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102001221121 its reverse (121122100201), we get a palindrome (223123321322).

It can be divided in two parts, 10200 and 1221121, that added together give a palindrome (1231321).

The spelling of 102001221121 in words is "one hundred two billion, one million, two hundred twenty-one thousand, one hundred twenty-one".