121020200002102 has 16 divisors (see below), whose sum is σ = 181979978765760. Its totient is φ = 60360233163912.

The previous prime is 121020200002099. The next prime is 121020200002139. The reversal of 121020200002102 is 201200002020121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2772373 + ... + 15802735.

It is an arithmetic number, because the mean of its divisors is an integer number (11373748672860).

Almost surely, 2^{121020200002102} is an apocalyptic number.

121020200002102 is a deficient number, since it is larger than the sum of its proper divisors (60959778763658).

121020200002102 is a wasteful number, since it uses less digits than its factorization.

121020200002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13041867.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121020200002102 its reverse (201200002020121), we get a palindrome (322220202022223).

The spelling of 121020200002102 in words is "one hundred twenty-one trillion, twenty billion, two hundred million, two thousand, one hundred two".