1022012121002 has 4 divisors (see below), whose sum is σ = 1533018181506. Its totient is φ = 511006060500.

The previous prime is 1022012120999. The next prime is 1022012121041. The reversal of 1022012121002 is 2001212102201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1008821368801 + 13190752201 = 1004401^2 + 114851^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255503030249 + ... + 255503030252.

Almost surely, 2^{1022012121002} is an apocalyptic number.

1022012121002 is a deficient number, since it is larger than the sum of its proper divisors (511006060504).

1022012121002 is an equidigital number, since it uses as much as digits as its factorization.

1022012121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511006060503.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1022012121002 its reverse (2001212102201), we get a palindrome (3023224223203).

The spelling of 1022012121002 in words is "one trillion, twenty-two billion, twelve million, one hundred twenty-one thousand, two".