1021020143211 has 12 divisors (see below), whose sum is σ = 1476770674080. Its totient is φ = 679773726000.

The previous prime is 1021020143183. The next prime is 1021020143233. The reversal of 1021020143211 is 1123410201201.

1021020143211 is a `hidden beast` number, since 1 + 0 + 21 + 0 + 201 + 432 + 11 = 666.

It is not a de Polignac number, because 1021020143211 - 2⁷ = 1021020143083 is a prime.

It is a super-2 number, since 2×1021020143211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021020143261) 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, 75523656 + ... + 75537173.

It is an arithmetic number, because the mean of its divisors is an integer number (123064222840).

Almost surely, 2^{1021020143211} is an apocalyptic number.

1021020143211 is a deficient number, since it is larger than the sum of its proper divisors (455750530869).

1021020143211 is a wasteful number, since it uses less digits than its factorization.

1021020143211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151061586 (or 151061583 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021020143211 its reverse (1123410201201), we get a palindrome (2144430344412).

The spelling of 1021020143211 in words is "one trillion, twenty-one billion, twenty million, one hundred forty-three thousand, two hundred eleven".