121220211001011 has 8 divisors (see below), whose sum is σ = 163196141671680. Its totient is φ = 80028877165512.

The previous prime is 121220211000899. The next prime is 121220211001033. The reversal of 121220211001011 is 110100112022121.

It is a happy number.

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

It is not a de Polignac number, because 121220211001011 - 2¹⁹ = 121220210476723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220211001051) 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, 196149208431 + ... + 196149209048.

It is an arithmetic number, because the mean of its divisors is an integer number (20399517708960).

Almost surely, 2^{121220211001011} is an apocalyptic number.

121220211001011 is a deficient number, since it is larger than the sum of its proper divisors (41975930670669).

121220211001011 is a wasteful number, since it uses less digits than its factorization.

121220211001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392298417585.

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

Adding to 121220211001011 its reverse (110100112022121), we get a palindrome (231320323023132).

The spelling of 121220211001011 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred eleven million, one thousand, eleven".