10021201000 has 64 divisors (see below), whose sum is σ = 23541457680. Its totient is φ = 3992780800.

The previous prime is 10021200979. The next prime is 10021201013. The reversal of 10021201000 is 10212001.

It can be written as a sum of positive squares in 8 ways, for example, as 1443848004 + 8577352996 = 37998^2 + 92614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237504 + ... + 276496.

Almost surely, 2^10021201000 is an apocalyptic number.

10021201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021201000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11770728840).

10021201000 is an abundant number, since it is smaller than the sum of its proper divisors (13520256680).

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

10021201000 is a wasteful number, since it uses less digits than its factorization.

10021201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39271 (or 39257 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10021201000 its reverse (10212001), we get a palindrome (10031413001).

The spelling of 10021201000 in words is "ten billion, twenty-one million, two hundred one thousand".