2121010220102 has 16 divisors (see below), whose sum is σ = 3212563610880. Its totient is φ = 1050156707592.

The previous prime is 2121010220101. The next prime is 2121010220107. The reversal of 2121010220102 is 2010220101212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121010220101) 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, 4072799 + ... + 4563957.

It is an arithmetic number, because the mean of its divisors is an integer number (200785225680).

Almost surely, 2^{2121010220102} is an apocalyptic number.

2121010220102 is a deficient number, since it is larger than the sum of its proper divisors (1091553390778).

2121010220102 is a wasteful number, since it uses less digits than its factorization.

2121010220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512227.

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

Adding to 2121010220102 its reverse (2010220101212), we get a palindrome (4131230321314).

The spelling of 2121010220102 in words is "two trillion, one hundred twenty-one billion, ten million, two hundred twenty thousand, one hundred two".