1010121220111 has 16 divisors (see below), whose sum is σ = 1021595328000. Its totient is φ = 998680767840.

The previous prime is 1010121220109. The next prime is 1010121220127. The reversal of 1010121220111 is 1110221210101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1010121220111 - 2¹ = 1010121220109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010121220091 and 1010121220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010121220411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201176781 + ... + 201181801.

It is an arithmetic number, because the mean of its divisors is an integer number (63849708000).

Almost surely, 2^{1010121220111} is an apocalyptic number.

1010121220111 is a deficient number, since it is larger than the sum of its proper divisors (11474107889).

1010121220111 is a wasteful number, since it uses less digits than its factorization.

1010121220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1010121220111 its reverse (1110221210101), we get a palindrome (2120342430212).

The spelling of 1010121220111 in words is "one trillion, ten billion, one hundred twenty-one million, two hundred twenty thousand, one hundred eleven".