1011211120101 has 64 divisors (see below), whose sum is σ = 1763041190400. Its totient is φ = 501074574336.

The previous prime is 1011211120061. The next prime is 1011211120109. The reversal of 1011211120101 is 1010211121101.

It is not a de Polignac number, because 1011211120101 - 2¹¹ = 1011211118053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211120109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1433106 + ... + 2018963.

It is an arithmetic number, because the mean of its divisors is an integer number (27547518600).

Almost surely, 2^{1011211120101} is an apocalyptic number.

It is an amenable number.

1011211120101 is a deficient number, since it is larger than the sum of its proper divisors (751830070299).

1011211120101 is a wasteful number, since it uses less digits than its factorization.

1011211120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452158.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1011211120101 its reverse (1010211121101), we get a palindrome (2021422241202).

It can be divided in two parts, 1011 and 211120101, that added together give a palindrome (211121112).

The spelling of 1011211120101 in words is "one trillion, eleven billion, two hundred eleven million, one hundred twenty thousand, one hundred one".