2121011202001 has 8 divisors (see below), whose sum is σ = 2191408281920. Its totient is φ = 2051571905712.

The previous prime is 2121011201941. The next prime is 2121011202007. The reversal of 2121011202001 is 1002021101212.

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 2121011202001 - 2²¹ = 2121009104849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121011202007) 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, 239441406 + ... + 239450263.

It is an arithmetic number, because the mean of its divisors is an integer number (273926035240).

Almost surely, 2^{2121011202001} is an apocalyptic number.

It is an amenable number.

2121011202001 is a deficient number, since it is larger than the sum of its proper divisors (70397079919).

2121011202001 is a wasteful number, since it uses less digits than its factorization.

2121011202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478891815.

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

Adding to 2121011202001 its reverse (1002021101212), we get a palindrome (3123032303213).

The spelling of 2121011202001 in words is "two trillion, one hundred twenty-one billion, eleven million, two hundred two thousand, one".