121211200101 has 8 divisors (see below), whose sum is σ = 161617658944. Its totient is φ = 80806104000.

The previous prime is 121211200091. The next prime is 121211200109. The reversal of 121211200101 is 101002112121.

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

It is not a de Polignac number, because 121211200101 - 2⁵ = 121211200069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211200109) 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, 111025 + ... + 504726.

It is an arithmetic number, because the mean of its divisors is an integer number (20202207368).

Almost surely, 2^121211200101 is an apocalyptic number.

It is an amenable number.

121211200101 is a deficient number, since it is larger than the sum of its proper divisors (40406458843).

121211200101 is an equidigital number, since it uses as much as digits as its factorization.

121211200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681371.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121211200101 its reverse (101002112121), we get a palindrome (222213312222).

The spelling of 121211200101 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred thousand, one hundred one".