121221020200102 has 8 divisors (see below), whose sum is σ = 182094672893112. Its totient is φ = 60522795902400.

The previous prime is 121221020200099. The next prime is 121221020200121. The reversal of 121221020200102 is 201002020122121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43857097099 + ... + 43857099862.

It is an arithmetic number, because the mean of its divisors is an integer number (22761834111639).

Almost surely, 2^{121221020200102} is an apocalyptic number.

121221020200102 is a deficient number, since it is larger than the sum of its proper divisors (60873652693010).

121221020200102 is an equidigital number, since it uses as much as digits as its factorization.

121221020200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87714197654.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121221020200102 its reverse (201002020122121), we get a palindrome (322223040322223).

The spelling of 121221020200102 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, two hundred thousand, one hundred two".