121020101011 has 8 divisors (see below), whose sum is σ = 122350402304. Its totient is φ = 119692787400.

The previous prime is 121020100997. The next prime is 121020101039. The reversal of 121020101011 is 110101020121.

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

It is a cyclic number.

It is not a de Polignac number, because 121020101011 - 2¹¹ = 121020098963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020101071) 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, 665415 + ... + 827536.

It is an arithmetic number, because the mean of its divisors is an integer number (15293800288).

Almost surely, 2^121020101011 is an apocalyptic number.

121020101011 is a deficient number, since it is larger than the sum of its proper divisors (1330301293).

121020101011 is a wasteful number, since it uses less digits than its factorization.

121020101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493841.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121020101011 its reverse (110101020121), we get a palindrome (231121121132).

The spelling of 121020101011 in words is "one hundred twenty-one billion, twenty million, one hundred one thousand, eleven".