2121111201102 has 16 divisors (see below), whose sum is σ = 4268248308480. Its totient is φ = 702699415992.

The previous prime is 2121111201073. The next prime is 2121111201109. The reversal of 2121111201102 is 2011021111212.

It is a happy number.

It is a super-2 number, since 2×2121111201102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121111201109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084411702 + ... + 1084413657.

It is an arithmetic number, because the mean of its divisors is an integer number (266765519280).

Almost surely, 2^{2121111201102} is an apocalyptic number.

2121111201102 is an abundant number, since it is smaller than the sum of its proper divisors (2147137107378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121111201102 is a wasteful number, since it uses less digits than its factorization.

2121111201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168825527.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121111201102 its reverse (2011021111212), we get a palindrome (4132132312314).

The spelling of 2121111201102 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred one thousand, one hundred two".