1601121000212 has 6 divisors (see below), whose sum is σ = 2801961750378. Its totient is φ = 800560500104.

The previous prime is 1601121000211. The next prime is 1601121000223. The reversal of 1601121000212 is 2120001211061.

It can be written as a sum of positive squares in only one way, i.e., 1554919217296 + 46201782916 = 1246964^2 + 214946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601121000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200140125023 + ... + 200140125030.

It is an arithmetic number, because the mean of its divisors is an integer number (466993625063).

Almost surely, 2^{1601121000212} is an apocalyptic number.

It is an amenable number.

1601121000212 is a deficient number, since it is larger than the sum of its proper divisors (1200840750166).

1601121000212 is a wasteful number, since it uses less digits than its factorization.

1601121000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400280250057 (or 400280250055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1601121000212 its reverse (2120001211061), we get a palindrome (3721122211273).

The spelling of 1601121000212 in words is "one trillion, six hundred one billion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.