1021000021010 has 32 divisors (see below), whose sum is σ = 1845648630144. Its totient is φ = 406656288000.

The previous prime is 1021000021007. The next prime is 1021000021087. The reversal of 1021000021010 is 101200001201.

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, 25021925 + ... + 25062695.

It is an arithmetic number, because the mean of its divisors is an integer number (57676519692).

Almost surely, 2^{1021000021010} is an apocalyptic number.

1021000021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021000021010 is a deficient number, since it is larger than the sum of its proper divisors (824648609134).

1021000021010 is a wasteful number, since it uses less digits than its factorization.

1021000021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51410.

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

Adding to 1021000021010 its reverse (101200001201), we get a palindrome (1122200022211).

The spelling of 1021000021010 in words is "one trillion, twenty-one billion, twenty-one thousand, ten".