101001221021211 has 16 divisors (see below), whose sum is σ = 158066260955904. Its totient is φ = 56155119022944.

The previous prime is 101001221021131. The next prime is 101001221021243. The reversal of 101001221021211 is 112120122100101.

It is a happy number.

It is not a de Polignac number, because 101001221021211 - 2⁷ = 101001221021083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101001221021711) 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, 64994349945 + ... + 64994351498.

It is an arithmetic number, because the mean of its divisors is an integer number (9879141309744).

Almost surely, 2^{101001221021211} is an apocalyptic number.

101001221021211 is a deficient number, since it is larger than the sum of its proper divisors (57065039934693).

101001221021211 is a wasteful number, since it uses less digits than its factorization.

101001221021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129988701490.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101001221021211 its reverse (112120122100101), we get a palindrome (213121343121312).

The spelling of 101001221021211 in words is "one hundred one trillion, one billion, two hundred twenty-one million, twenty-one thousand, two hundred eleven".