1020002122101 has 16 divisors (see below), whose sum is σ = 1407589718400. Its totient is φ = 656230978368.

The previous prime is 1020002122079. The next prime is 1020002122103. The reversal of 1020002122101 is 1012212000201.

It is not a de Polignac number, because 1020002122101 - 2¹³ = 1020002113909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002122103) 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, 2697586 + ... + 3052371.

It is an arithmetic number, because the mean of its divisors is an integer number (87974357400).

Almost surely, 2^{1020002122101} is an apocalyptic number.

It is an amenable number.

1020002122101 is a deficient number, since it is larger than the sum of its proper divisors (387587596299).

1020002122101 is a wasteful number, since it uses less digits than its factorization.

1020002122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752028.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020002122101 its reverse (1012212000201), we get a palindrome (2032214122302).

The spelling of 1020002122101 in words is "one trillion, twenty billion, two million, one hundred twenty-two thousand, one hundred one".