201011121012 has 48 divisors (see below), whose sum is σ = 505291026240. Its totient is φ = 61826780928.

The previous prime is 201011120987. The next prime is 201011121023. The reversal of 201011121012 is 210121110102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189643 + ... + 661805.

It is an arithmetic number, because the mean of its divisors is an integer number (10526896380).

Almost surely, 2^201011121012 is an apocalyptic number.

It is an amenable number.

201011121012 is an abundant number, since it is smaller than the sum of its proper divisors (304279905228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201011121012 is a wasteful number, since it uses less digits than its factorization.

201011121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474912 (or 474910 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201011121012 its reverse (210121110102), we get a palindrome (411132231114).

The spelling of 201011121012 in words is "two hundred one billion, eleven million, one hundred twenty-one thousand, twelve".