1021201010101 has 12 divisors (see below), whose sum is σ = 1084877582400. Its totient is φ = 961066255040.

The previous prime is 1021201010087. The next prime is 1021201010113. The reversal of 1021201010101 is 1010101021201.

It is not a de Polignac number, because 1021201010101 - 2¹⁷ = 1021200879029 is a prime.

It is a Duffinian number.

1021201010101 is a modest number, since divided by 1010101 gives 10212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021201010161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4540500 + ... + 4760098.

It is an arithmetic number, because the mean of its divisors is an integer number (90406465200).

Almost surely, 2^{1021201010101} is an apocalyptic number.

It is an amenable number.

1021201010101 is a deficient number, since it is larger than the sum of its proper divisors (63676572299).

1021201010101 is a wasteful number, since it uses less digits than its factorization.

1021201010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235724 (or 235707 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021201010101 its reverse (1010101021201), we get a palindrome (2031302031302).

The spelling of 1021201010101 in words is "one trillion, twenty-one billion, two hundred one million, ten thousand, one hundred one".