1021021021210 has 16 divisors (see below), whose sum is σ = 1872514024776. Its totient is φ = 400702589248.

The previous prime is 1021021021201. The next prime is 1021021021211. The reversal of 1021021021210 is 121201201201.

1021021021210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 783240930081 + 237780091129 = 885009^2 + 487627^2 .

It is a super-2 number, since 2×1021021021210² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021021021211) 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, 963226849 + ... + 963227908.

Almost surely, 2^{1021021021210} is an apocalyptic number.

1021021021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021021021210 is a deficient number, since it is larger than the sum of its proper divisors (851493003566).

1021021021210 is a wasteful number, since it uses less digits than its factorization.

1021021021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926454817.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021021021210 its reverse (121201201201), we get a palindrome (1142222222411).

The spelling of 1021021021210 in words is "one trillion, twenty-one billion, twenty-one million, twenty-one thousand, two hundred ten".