1021201212122 has 32 divisors (see below), whose sum is σ = 1887364329984. Its totient is φ = 403548163200.

The previous prime is 1021201212113. The next prime is 1021201212131. The reversal of 1021201212122 is 2212121021201.

It is an interprime number because it is at equal distance from previous prime (1021201212113) and next prime (1021201212131).

It is a self number, because there is not a number n which added to its sum of digits gives 1021201212122.

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, 2913779 + ... + 3245382.

It is an arithmetic number, because the mean of its divisors is an integer number (58980135312).

Almost surely, 2^{1021201212122} is an apocalyptic number.

1021201212122 is a deficient number, since it is larger than the sum of its proper divisors (866163117862).

1021201212122 is a wasteful number, since it uses less digits than its factorization.

1021201212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6160094.

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

Adding to 1021201212122 its reverse (2212121021201), we get a palindrome (3233322233323).

The spelling of 1021201212122 in words is "one trillion, twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred twenty-two".