1021321002010 has 16 divisors (see below), whose sum is σ = 1843177752576. Its totient is φ = 407461745488.

The previous prime is 1021321001977. The next prime is 1021321002019. The reversal of 1021321002010 is 102001231201.

It is not an unprimeable number, because it can be changed into a prime (1021321002019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133327894 + ... + 133335553.

It is an arithmetic number, because the mean of its divisors is an integer number (115198609536).

Almost surely, 2^{1021321002010} is an apocalyptic number.

1021321002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021321002010 is a deficient number, since it is larger than the sum of its proper divisors (821856750566).

1021321002010 is a wasteful number, since it uses less digits than its factorization.

1021321002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266663837.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1021321002010 its reverse (102001231201), we get a palindrome (1123322233211).

The spelling of 1021321002010 in words is "one trillion, twenty-one billion, three hundred twenty-one million, two thousand, ten".