2121111200002 has 4 divisors (see below), whose sum is σ = 3181666800006. Its totient is φ = 1060555600000.

The previous prime is 2121111199927. The next prime is 2121111200009. The reversal of 2121111200002 is 2000021111212.

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., 1320911177481 + 800200022521 = 1149309^2 + 894539^2 .

It is a super-2 number, since 2×2121111200002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121111200009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530277799999 + ... + 530277800002.

Almost surely, 2^{2121111200002} is an apocalyptic number.

2121111200002 is a deficient number, since it is larger than the sum of its proper divisors (1060555600004).

2121111200002 is a wasteful number, since it uses less digits than its factorization.

2121111200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060555600003.

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

Adding to 2121111200002 its reverse (2000021111212), we get a palindrome (4121132311214).

The spelling of 2121111200002 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred thousand, two".