201023210102122 has 8 divisors (see below), whose sum is σ = 308889322839972. Its totient is φ = 98060102488800.

The previous prime is 201023210102119. The next prime is 201023210102171. The reversal of 201023210102122 is 221201012320102.

It can be written as a sum of positive squares in 2 ways, for example, as 173257487378361 + 27765722723761 = 13162731^2 + 5269319^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 201023210102122.

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, 1225751281029 + ... + 1225751281192.

Almost surely, 2^{201023210102122} is an apocalyptic number.

201023210102122 is a deficient number, since it is larger than the sum of its proper divisors (107866112737850).

201023210102122 is a wasteful number, since it uses less digits than its factorization.

201023210102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451502562264.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201023210102122 its reverse (221201012320102), we get a palindrome (422224222422224).

The spelling of 201023210102122 in words is "two hundred one trillion, twenty-three billion, two hundred ten million, one hundred two thousand, one hundred twenty-two".