1020202121011 has 8 divisors (see below), whose sum is σ = 1064611487520. Its totient is φ = 975797150592.

The previous prime is 1020202120991. The next prime is 1020202121017. The reversal of 1020202121011 is 1101212020201.

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 1020202121011 - 2¹³ = 1020202112819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020202120982 and 1020202121000.

It is not an unprimeable number, because it can be changed into a prime (1020202121017) 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, 620340 + ... + 1557313.

It is an arithmetic number, because the mean of its divisors is an integer number (133076435940).

Almost surely, 2^{1020202121011} is an apocalyptic number.

1020202121011 is a deficient number, since it is larger than the sum of its proper divisors (44409366509).

1020202121011 is a wasteful number, since it uses less digits than its factorization.

1020202121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198045.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020202121011 its reverse (1101212020201), we get a palindrome (2121414141212).

The spelling of 1020202121011 in words is "one trillion, twenty billion, two hundred two million, one hundred twenty-one thousand, eleven".