1011211110121 has 8 divisors (see below), whose sum is σ = 1023771823200. Its totient is φ = 998659384032.

The previous prime is 1011211110103. The next prime is 1011211110157. The reversal of 1011211110121 is 1210111121101.

1011211110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1011211110121 - 2¹⁵ = 1011211077353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011211116121) 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, 2020171 + ... + 2470528.

It is an arithmetic number, because the mean of its divisors is an integer number (127971477900).

Almost surely, 2^{1011211110121} is an apocalyptic number.

It is an amenable number.

1011211110121 is a deficient number, since it is larger than the sum of its proper divisors (12560713079).

1011211110121 is an equidigital number, since it uses as much as digits as its factorization.

1011211110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493495.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1011211110121 its reverse (1210111121101), we get a palindrome (2221322231222).

The spelling of 1011211110121 in words is "one trillion, eleven billion, two hundred eleven million, one hundred ten thousand, one hundred twenty-one".