2122121001002 has 4 divisors (see below), whose sum is σ = 3183181501506. Its totient is φ = 1061060500500.

The previous prime is 2122121001001. The next prime is 2122121001037. The reversal of 2122121001002 is 2001001212212.

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., 1986490106041 + 135630894961 = 1409429^2 + 368281^2 .

It is not an unprimeable number, because it can be changed into a prime (2122121001001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530530250249 + ... + 530530250252.

Almost surely, 2^{2122121001002} is an apocalyptic number.

2122121001002 is a deficient number, since it is larger than the sum of its proper divisors (1061060500504).

2122121001002 is a wasteful number, since it uses less digits than its factorization.

2122121001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061060500503.

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

Adding to 2122121001002 its reverse (2001001212212), we get a palindrome (4123122213214).

The spelling of 2122121001002 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-one million, one thousand, two".