210034001421 has 12 divisors (see below), whose sum is σ = 311581972572. Its totient is φ = 136238270976.

The previous prime is 210034001393. The next prime is 210034001431. The reversal of 210034001421 is 124100430012.

210034001421 is a `hidden beast` number, since 210 + 0 + 34 + 0 + 0 + 1 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 201461834025 + 8572167396 = 448845^2 + 92586^2 .

It is not a de Polignac number, because 210034001421 - 2⁵ = 210034001389 is a prime.

It is a super-2 number, since 2×210034001421² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210034001394 and 210034001403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210034001431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315366036 + ... + 315366701.

It is an arithmetic number, because the mean of its divisors is an integer number (25965164381).

Almost surely, 2^210034001421 is an apocalyptic number.

It is an amenable number.

210034001421 is a deficient number, since it is larger than the sum of its proper divisors (101547971151).

210034001421 is a wasteful number, since it uses less digits than its factorization.

210034001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630732780 (or 630732777 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 210034001421 its reverse (124100430012), we get a palindrome (334134431433).

The spelling of 210034001421 in words is "two hundred ten billion, thirty-four million, one thousand, four hundred twenty-one".