210121022221019 has 8 divisors (see below), whose sum is σ = 258610488887520. Its totient is φ = 166249599998976.

The previous prime is 210121022220983. The next prime is 210121022221043. The reversal of 210121022221019 is 910122220121012.

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

It is not a de Polignac number, because 210121022221019 - 2¹² = 210121022216923 is a prime.

It is a super-2 number, since 2×210121022221019² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210121022224019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154511111014 + ... + 1154511111195.

It is an arithmetic number, because the mean of its divisors is an integer number (32326311110940).

Almost surely, 2^{210121022221019} is an apocalyptic number.

210121022221019 is a deficient number, since it is larger than the sum of its proper divisors (48489466666501).

210121022221019 is a wasteful number, since it uses less digits than its factorization.

210121022221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309022222229.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 210121022221019 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, nineteen".