202001021121001 has 16 divisors (see below), whose sum is σ = 215173780107840. Its totient is φ = 189095947554240.

The previous prime is 202001021120953. The next prime is 202001021121043. The reversal of 202001021121001 is 100121120100202.

It is a cyclic number.

It is not a de Polignac number, because 202001021121001 - 2²¹ = 202001019023849 is a prime.

It is a super-3 number, since 3×202001021121001³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001021121301) 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, 187975030 + ... + 189046591.

It is an arithmetic number, because the mean of its divisors is an integer number (13448361256740).

Almost surely, 2^{202001021121001} is an apocalyptic number.

It is an amenable number.

202001021121001 is a deficient number, since it is larger than the sum of its proper divisors (13172758986839).

202001021121001 is a wasteful number, since it uses less digits than its factorization.

202001021121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377021976.

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

Adding to 202001021121001 its reverse (100121120100202), we get a palindrome (302122141221203).

The spelling of 202001021121001 in words is "two hundred two trillion, one billion, twenty-one million, one hundred twenty-one thousand, one".