1021000001210 has 64 divisors (see below), whose sum is σ = 2169783797760. Its totient is φ = 338501237760.

The previous prime is 1021000001201. The next prime is 1021000001227. The reversal of 1021000001210 is 121000001201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2614622 + ... + 2979638.

It is an arithmetic number, because the mean of its divisors is an integer number (33902871840).

Almost surely, 2^{1021000001210} is an apocalyptic number.

1021000001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021000001210 is an abundant number, since it is smaller than the sum of its proper divisors (1148783796550).

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

1021000001210 is a wasteful number, since it uses less digits than its factorization.

1021000001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366351.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1021000001210 its reverse (121000001201), we get a palindrome (1142000002411).

Subtracting from 1021000001210 its reverse (121000001201), we obtain a palindrome (900000000009).

The spelling of 1021000001210 in words is "one trillion, twenty-one billion, one thousand, two hundred ten".