102121220001 has 8 divisors (see below), whose sum is σ = 139841670784. Its totient is φ = 66240791280.

The previous prime is 102121219997. The next prime is 102121220017. The reversal of 102121220001 is 100022121201.

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

It is not a de Polignac number, because 102121220001 - 2² = 102121219997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102121220041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460005385 + ... + 460005606.

It is an arithmetic number, because the mean of its divisors is an integer number (17480208848).

Almost surely, 2^102121220001 is an apocalyptic number.

It is an amenable number.

102121220001 is a deficient number, since it is larger than the sum of its proper divisors (37720450783).

102121220001 is an equidigital number, since it uses as much as digits as its factorization.

102121220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920011031.

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

Adding to 102121220001 its reverse (100022121201), we get a palindrome (202143341202).

The spelling of 102121220001 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty thousand, one".