210102006450 has 144 divisors (see below), whose sum is σ = 606522608640. Its totient is φ = 47991646080.

The previous prime is 210102006391. The next prime is 210102006461. The reversal of 210102006450 is 54600201012.

It is a super-2 number, since 2×210102006450² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12214456 + ... + 12231644.

It is an arithmetic number, because the mean of its divisors is an integer number (4211962560).

Almost surely, 2^210102006450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210102006450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303261304320).

210102006450 is an abundant number, since it is smaller than the sum of its proper divisors (396420602190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210102006450 is a wasteful number, since it uses less digits than its factorization.

210102006450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18881 (or 18869 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 210102006450 its reverse (54600201012), we get a palindrome (264702207462).

The spelling of 210102006450 in words is "two hundred ten billion, one hundred two million, six thousand, four hundred fifty".