210121001122 has 4 divisors (see below), whose sum is σ = 315181501686. Its totient is φ = 105060500560.

The previous prime is 210121001107. The next prime is 210121001161. The reversal of 210121001122 is 221100121012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 153867123081 + 56253878041 = 392259^2 + 237179^2 .

It is a super-2 number, since 2×210121001122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52530250279 + ... + 52530250282.

Almost surely, 2^210121001122 is an apocalyptic number.

210121001122 is a deficient number, since it is larger than the sum of its proper divisors (105060500564).

210121001122 is a wasteful number, since it uses less digits than its factorization.

210121001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105060500563.

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

Adding to 210121001122 its reverse (221100121012), we get a palindrome (431221122134).

The spelling of 210121001122 in words is "two hundred ten billion, one hundred twenty-one million, one thousand, one hundred twenty-two".