1020211202021 has 16 divisors (see below), whose sum is σ = 1124165677248. Its totient is φ = 918144595200.

The previous prime is 1020211201991. The next prime is 1020211202041. The reversal of 1020211202021 is 1202021120201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020211202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020211201987 and 1020211202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020211202041) 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, 531731 + ... + 1524191.

It is an arithmetic number, because the mean of its divisors is an integer number (70260354828).

Almost surely, 2^{1020211202021} is an apocalyptic number.

1020211202021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020211202021 is a deficient number, since it is larger than the sum of its proper divisors (103954475227).

1020211202021 is a wasteful number, since it uses less digits than its factorization.

1020211202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993412.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020211202021 its reverse (1202021120201), we get a palindrome (2222232322222).

The spelling of 1020211202021 in words is "one trillion, twenty billion, two hundred eleven million, two hundred two thousand, twenty-one".