1021101011021 has 64 divisors (see below), whose sum is σ = 1318878167040. Its totient is φ = 768931937280.

The previous prime is 1021101011009. The next prime is 1021101011041. The reversal of 1021101011021 is 1201101011201.

It is not a de Polignac number, because 1021101011021 - 2⁶ = 1021101010957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021101010993 and 1021101011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101011041) 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, 41944565 + ... + 41968901.

It is an arithmetic number, because the mean of its divisors is an integer number (20607471360).

Almost surely, 2^{1021101011021} is an apocalyptic number.

It is an amenable number.

1021101011021 is a deficient number, since it is larger than the sum of its proper divisors (297777156019).

1021101011021 is a wasteful number, since it uses less digits than its factorization.

1021101011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24634.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1021101011021 its reverse (1201101011201), we get a palindrome (2222202022222).

The spelling of 1021101011021 in words is "one trillion, twenty-one billion, one hundred one million, eleven thousand, twenty-one".