121210020001 has 8 divisors (see below), whose sum is σ = 139355233920. Its totient is φ = 103272180288.

The previous prime is 121210019963. The next prime is 121210020007. The reversal of 121210020001 is 100020012121.

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 121210020001 - 2¹³ = 121210011809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210020001.

It is not an unprimeable number, because it can be changed into a prime (121210020007) 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, 51842296 + ... + 51844633.

It is an arithmetic number, because the mean of its divisors is an integer number (17419404240).

Almost surely, 2^121210020001 is an apocalyptic number.

It is an amenable number.

121210020001 is a deficient number, since it is larger than the sum of its proper divisors (18145213919).

121210020001 is a wasteful number, since it uses less digits than its factorization.

121210020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103687103.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121210020001 its reverse (100020012121), we get a palindrome (221230032122).

The spelling of 121210020001 in words is "one hundred twenty-one billion, two hundred ten million, twenty thousand, one".