1021121011101 has 64 divisors (see below), whose sum is σ = 1405489971200. Its totient is φ = 659242561536.

The previous prime is 1021121011091. The next prime is 1021121011129. The reversal of 1021121011101 is 1011101211201.

It is not a de Polignac number, because 1021121011101 - 2⁶ = 1021121011037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021121091101) 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, 2096757480 + ... + 2096757966.

It is an arithmetic number, because the mean of its divisors is an integer number (21960780800).

Almost surely, 2^{1021121011101} is an apocalyptic number.

It is an amenable number.

1021121011101 is a deficient number, since it is larger than the sum of its proper divisors (384368960099).

1021121011101 is a wasteful number, since it uses less digits than its factorization.

1021121011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298.

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

Adding to 1021121011101 its reverse (1011101211201), we get a palindrome (2032222222302).

The spelling of 1021121011101 in words is "one trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, one hundred one".