201011121121 has 8 divisors (see below), whose sum is σ = 203952760704. Its totient is φ = 198072551040.

The previous prime is 201011121107. The next prime is 201011121131. The reversal of 201011121121 is 121121110102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201011121121 - 2⁵ = 201011121089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201011121131) 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, 635280 + ... + 897553.

It is an arithmetic number, because the mean of its divisors is an integer number (25494095088).

Almost surely, 2^201011121121 is an apocalyptic number.

It is an amenable number.

201011121121 is a deficient number, since it is larger than the sum of its proper divisors (2941639583).

201011121121 is a wasteful number, since it uses less digits than its factorization.

201011121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534751.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201011121121 its reverse (121121110102), we get a palindrome (322132231223).

The spelling of 201011121121 in words is "two hundred one billion, eleven million, one hundred twenty-one thousand, one hundred twenty-one".