1021210211101 has 8 divisors (see below), whose sum is σ = 1029414391040. Its totient is φ = 1013038395552.

The previous prime is 1021210211069. The next prime is 1021210211171. The reversal of 1021210211101 is 1011120121201.

It is a happy number.

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 1021210211101 - 2⁵ = 1021210211069 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 (1021210211171) 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, 8027736 + ... + 8153953.

It is an arithmetic number, because the mean of its divisors is an integer number (128676798880).

Almost surely, 2^{1021210211101} is an apocalyptic number.

It is an amenable number.

1021210211101 is a deficient number, since it is larger than the sum of its proper divisors (8204179939).

1021210211101 is a wasteful number, since it uses less digits than its factorization.

1021210211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16182195.

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

Adding to 1021210211101 its reverse (1011120121201), we get a palindrome (2032330332302).

The spelling of 1021210211101 in words is "one trillion, twenty-one billion, two hundred ten million, two hundred eleven thousand, one hundred one".