1021212121202 has 64 divisors (see below), whose sum is σ = 1933761580800. Its totient is φ = 401902083072.

The previous prime is 1021212121157. The next prime is 1021212121229. The reversal of 1021212121202 is 2021212121201.

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, 1424513 + ... + 2017835.

It is an arithmetic number, because the mean of its divisors is an integer number (30215024700).

Almost surely, 2^{1021212121202} is an apocalyptic number.

1021212121202 is a deficient number, since it is larger than the sum of its proper divisors (912549459598).

1021212121202 is a wasteful number, since it uses less digits than its factorization.

1021212121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593552 (or 593538 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021212121202 its reverse (2021212121201), we get a palindrome (3042424242403).

Subtracting 1021212121202 from its reverse (2021212121201), we obtain a palindrome (999999999999).

It can be divided in two parts, 10 and 21212121202, that added together give a palindrome (21212121212).

The spelling of 1021212121202 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, two hundred two".