210121122020002 has 8 divisors (see below), whose sum is σ = 322869041152812. Its totient is φ = 102498108302400.

The previous prime is 210121122019981. The next prime is 210121122020023. The reversal of 210121122020002 is 200020221121012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (210121122019981) and next prime (210121122020023).

It can be written as a sum of positive squares in 2 ways, for example, as 192063815146681 + 18057306873321 = 13858709^2 + 4249389^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281226353699 + ... + 1281226353862.

Almost surely, 2^{210121122020002} is an apocalyptic number.

210121122020002 is a deficient number, since it is larger than the sum of its proper divisors (112747919132810).

210121122020002 is a wasteful number, since it uses less digits than its factorization.

210121122020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562452707604.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210121122020002 its reverse (200020221121012), we get a palindrome (410141343141014).

The spelling of 210121122020002 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twenty-two million, twenty thousand, two".